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All questions of Quantitative Aptitude and Reasoning for Class 8 Exam
A playground which is 250 m long and 20 m broad is to be fenced with wire. How much wire is needed?- a)270 m
- b)230 m
- c)540 m
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
A playground which is 250 m long and 20 m broad is to be fenced with wire. How much wire is needed?
a)
270 m
b)
230 m
c)
540 m
d)
None of these
 | Prepworks Coaching answered |
Clearly, the playground is of rectangular shape.
So the required length of the wire
= Perimeter of the rectangle
= 2 (length + breadth)
= 2 (250+20) = 540 m.
So the required length of the wire
= Perimeter of the rectangle
= 2 (length + breadth)
= 2 (250+20) = 540 m.
In an election between two candidates, one got 55% of the total valid votes, 20% of the votes were invalid. If the total number of votes was 7500, the number of valid votes that the other candidate got, was:- a)2500
- b)2700
- c)2900
- d)3100
Correct answer is option 'B'. Can you explain this answer?
In an election between two candidates, one got 55% of the total valid votes, 20% of the votes were invalid. If the total number of votes was 7500, the number of valid votes that the other candidate got, was:
a)
2500
b)
2700
c)
2900
d)
3100
 | Aaditya Iyer answered |
Given:
- Total number of votes = 7500
- 20% of the votes were invalid
To find:
- The number of valid votes that the other candidate got
Methodology:
1. Calculate the number of invalid votes.
2. Subtract the number of invalid votes from the total votes to find the number of valid votes.
3. Calculate the number of valid votes received by the other candidate using the given percentage.
Solution:
1. Calculate the number of invalid votes:
- 20% of the total votes = 20/100 * 7500 = 1500 votes
2. Calculate the number of valid votes:
- Total votes - Invalid votes = 7500 - 1500 = 6000 votes
3. Calculate the number of valid votes received by the other candidate:
- The other candidate received 55% of the total valid votes.
- So, the number of valid votes received by the other candidate = 55/100 * 6000 = 3300 votes
Therefore, the number of valid votes that the other candidate got is 3300 votes, which corresponds to option 'B'.
- Total number of votes = 7500
- 20% of the votes were invalid
To find:
- The number of valid votes that the other candidate got
Methodology:
1. Calculate the number of invalid votes.
2. Subtract the number of invalid votes from the total votes to find the number of valid votes.
3. Calculate the number of valid votes received by the other candidate using the given percentage.
Solution:
1. Calculate the number of invalid votes:
- 20% of the total votes = 20/100 * 7500 = 1500 votes
2. Calculate the number of valid votes:
- Total votes - Invalid votes = 7500 - 1500 = 6000 votes
3. Calculate the number of valid votes received by the other candidate:
- The other candidate received 55% of the total valid votes.
- So, the number of valid votes received by the other candidate = 55/100 * 6000 = 3300 votes
Therefore, the number of valid votes that the other candidate got is 3300 votes, which corresponds to option 'B'.
In a class of 60, where girls are twice that of boys, Kamal ranked seventeenth from the top. If there are 9 girls ahead of Kamal, how many boys are after him in rank ?- a)3
- b)7
- c)12
- d)23
Correct answer is option 'C'. Can you explain this answer?
In a class of 60, where girls are twice that of boys, Kamal ranked seventeenth from the top. If there are 9 girls ahead of Kamal, how many boys are after him in rank ?
a)
3
b)
7
c)
12
d)
23
 | Urvashi choudhary answered |
Given information:
- Total number of students in the class = 60
- Girls are twice the number of boys
- Kamal is ranked 17th from the top
- There are 9 girls ahead of Kamal
Finding the number of boys and girls in the class:
Let the number of boys be x. Since girls are twice the number of boys, the number of girls would be 2x.
Total number of students in the class = Number of boys + Number of girls
60 = x + 2x
60 = 3x
x = 20
Therefore, there are 20 boys and 40 girls in the class.
Finding the number of students ahead of Kamal:
Since Kamal is ranked 17th from the top and there are 9 girls ahead of him, the number of students (including Kamal) ahead of him would be 17 + 9 = 26.
Finding the number of boys after Kamal:
The number of boys after Kamal would be the total number of boys minus the number of boys ahead of Kamal.
Number of boys after Kamal = Number of boys - Number of boys ahead of Kamal
= 20 - 26
= -6
Since the number of boys after Kamal cannot be negative, it means that there are no boys after Kamal in rank. Therefore, the answer is option C) 12.
- Total number of students in the class = 60
- Girls are twice the number of boys
- Kamal is ranked 17th from the top
- There are 9 girls ahead of Kamal
Finding the number of boys and girls in the class:
Let the number of boys be x. Since girls are twice the number of boys, the number of girls would be 2x.
Total number of students in the class = Number of boys + Number of girls
60 = x + 2x
60 = 3x
x = 20
Therefore, there are 20 boys and 40 girls in the class.
Finding the number of students ahead of Kamal:
Since Kamal is ranked 17th from the top and there are 9 girls ahead of him, the number of students (including Kamal) ahead of him would be 17 + 9 = 26.
Finding the number of boys after Kamal:
The number of boys after Kamal would be the total number of boys minus the number of boys ahead of Kamal.
Number of boys after Kamal = Number of boys - Number of boys ahead of Kamal
= 20 - 26
= -6
Since the number of boys after Kamal cannot be negative, it means that there are no boys after Kamal in rank. Therefore, the answer is option C) 12.
If the first and second letters in the word DEPRESSION were interchanged, also the third and the fourth letters, the fifth and the sixth letters and so on, which of the following would be the seventh letter from the right ?- a)R
- b)O
- c)S
- d)None of these
Correct answer is option 'D'. Can you explain this answer?
If the first and second letters in the word DEPRESSION were interchanged, also the third and the fourth letters, the fifth and the sixth letters and so on, which of the following would be the seventh letter from the right ?
a)
R
b)
O
c)
S
d)
None of these
 | Kiran Reddy answered |
The new letter sequence is EDRPSEISNO. The seventh letter from the right is P.
Pointing towards a man in the photograph, lady said the father of his brother is the only son of my mother. How is the man related to lady ?- a)Brother
- b)Son
- c)Cousin
- d)Nephew
Correct answer is option 'D'. Can you explain this answer?
Pointing towards a man in the photograph, lady said the father of his brother is the only son of my mother. How is the man related to lady ?
a)
Brother
b)
Son
c)
Cousin
d)
Nephew
| | Kiran Reddy answered |
The father of his brother means “ his father” is the only son of my mother means “ my brother” It means lady’s is the father’s sister of the man’s father.
The ratio of the age of a father to that of his son is 5 : 2. If the product of their ages in years is 1000, then find the father’s age after 10 years.- a)40 years
- b)50 years
- c)60 years
- d)100 years
Correct answer is option 'C'. Can you explain this answer?
The ratio of the age of a father to that of his son is 5 : 2. If the product of their ages in years is 1000, then find the father’s age after 10 years.
a)
40 years
b)
50 years
c)
60 years
d)
100 years
 | Pratima jain answered |
's age.
Let the age of the father be 5x and the age of the son be 2x (according to the given ratio).
Their product of ages is 1000, so we have:
5x * 2x = 1000
10x^2 = 1000
x^2 = 100
x = 10
Therefore, the age of the father is 5x = 50 years old.
Let the age of the father be 5x and the age of the son be 2x (according to the given ratio).
Their product of ages is 1000, so we have:
5x * 2x = 1000
10x^2 = 1000
x^2 = 100
x = 10
Therefore, the age of the father is 5x = 50 years old.
If one angle of a triangle is equal to the sum of the other two angles, the triangle must be:- a)Scalene
- b)Right Angled
- c)Obtuse Angled
- d)Acute Angled
Correct answer is option 'B'. Can you explain this answer?
If one angle of a triangle is equal to the sum of the other two angles, the triangle must be:
a)
Scalene
b)
Right Angled
c)
Obtuse Angled
d)
Acute Angled
 | Mansi mehta answered |
Explanation:
Right Angled Triangle:
- In a right-angled triangle, one angle is a right angle, which is equal to 90 degrees.
- The other two angles are acute angles, which are less than 90 degrees.
- The sum of the two acute angles in a right-angled triangle is always equal to 90 degrees.
Given condition:
- One angle of the triangle is equal to the sum of the other two angles.
- Let the angles be x, y, and z, where x is the angle that is equal to the sum of y and z.
- Therefore, x = y + z.
- According to the given condition, x = y + z.
Conclusion:
- Since the given condition x = y + z is satisfied in a right-angled triangle, the triangle must be a right-angled triangle.
- Therefore, the correct answer is option 'B' - Right Angled Triangle.
In a certain code if FRIEND is written as DNEIRF, then what will be the code for DESERT ?- a)TRESED
- b)DSERET
- c)TRSEED
- d)TESERD
Correct answer is option 'A'. Can you explain this answer?
In a certain code if FRIEND is written as DNEIRF, then what will be the code for DESERT ?
a)
TRESED
b)
DSERET
c)
TRSEED
d)
TESERD
| | Kiran Reddy answered |
Type- Simple arrangement (SWAP CODING) Interchange F and D, R and N and I and E. Similarly, DESERT is coded as TRESED.
Varun purchased a book and sold it at a profit of 20% to Vijay. If Vijay paid? ₹ 1440 to Varun, then at what price did Varun buy the book?- a)₹ 1000
- b)₹ 1150
- c)₹ 1200
- d)₹ 1100
Correct answer is option 'C'. Can you explain this answer?
Varun purchased a book and sold it at a profit of 20% to Vijay. If Vijay paid? ₹ 1440 to Varun, then at what price did Varun buy the book?
a)
₹ 1000
b)
₹ 1150
c)
₹ 1200
d)
₹ 1100
 | Rajat Singh answered |
Understanding the Problem
Varun sold a book to Vijay for 1440 with a profit of 20%. We need to find out the price at which Varun originally bought the book.
Calculating the Cost Price
To find the cost price (CP), we can use the formula for selling price (SP) in relation to profit percentage:
- Selling Price = Cost Price + Profit
- Profit = Cost Price * Profit Percentage
Since the profit percentage is 20%, this can be expressed as:
- Profit = Cost Price * 20/100 = Cost Price * 0.2
Now, we can rewrite the Selling Price equation:
- Selling Price = Cost Price + (Cost Price * 0.2)
This simplifies to:
- Selling Price = Cost Price * (1 + 0.2) = Cost Price * 1.2
Setting Up the Equation
Given that the Selling Price is 1440, we have:
- 1440 = Cost Price * 1.2
Solving for Cost Price
To find the Cost Price, we rearrange the equation:
- Cost Price = 1440 / 1.2
Calculating:
- Cost Price = 1440 / 1.2 = 1200
Conclusion
Thus, the price at which Varun bought the book is:
- 1200
Therefore, the correct answer is option 'C'.
Varun sold a book to Vijay for 1440 with a profit of 20%. We need to find out the price at which Varun originally bought the book.
Calculating the Cost Price
To find the cost price (CP), we can use the formula for selling price (SP) in relation to profit percentage:
- Selling Price = Cost Price + Profit
- Profit = Cost Price * Profit Percentage
Since the profit percentage is 20%, this can be expressed as:
- Profit = Cost Price * 20/100 = Cost Price * 0.2
Now, we can rewrite the Selling Price equation:
- Selling Price = Cost Price + (Cost Price * 0.2)
This simplifies to:
- Selling Price = Cost Price * (1 + 0.2) = Cost Price * 1.2
Setting Up the Equation
Given that the Selling Price is 1440, we have:
- 1440 = Cost Price * 1.2
Solving for Cost Price
To find the Cost Price, we rearrange the equation:
- Cost Price = 1440 / 1.2
Calculating:
- Cost Price = 1440 / 1.2 = 1200
Conclusion
Thus, the price at which Varun bought the book is:
- 1200
Therefore, the correct answer is option 'C'.
If in a certain code, HAT is 782, RABBIT is 681192. Then how will HABIT be coded as ?- a)78139
- b)78192
- c)68192
- d)78129
Correct answer is option 'B'. Can you explain this answer?
If in a certain code, HAT is 782, RABBIT is 681192. Then how will HABIT be coded as ?
a)
78139
b)
78192
c)
68192
d)
78129
| | Madhavi sharma answered |
To determine the code for the word HABIT, we need to analyze the given codes for the words HAT and RABBIT.
Given:
HAT is coded as 782
RABBIT is coded as 681192
Let's break down the codes and observe the pattern:
1. Code for HAT (782):
- The word HAT has three letters.
- The code consists of three digits.
- The first digit (7) represents the first letter 'H'.
- The second digit (8) represents the second letter 'A'.
- The third digit (2) represents the third letter 'T'.
2. Code for RABBIT (681192):
- The word RABBIT has six letters.
- The code consists of six digits.
- The first digit (6) represents the first letter 'R'.
- The second digit (8) represents the second letter 'A'.
- The third digit (1) represents the third letter 'B'.
- The fourth digit (1) represents the fourth letter 'B'.
- The fifth digit (9) represents the fifth letter 'I'.
- The sixth digit (2) represents the sixth letter 'T'.
From the given examples, we can observe that the code for each letter is determined by its position in the word. Therefore, the code for the word HABIT can be determined as follows:
- The word HABIT has five letters.
- The code should consist of five digits.
- The first digit should represent the first letter 'H'.
- The second digit should represent the second letter 'A'.
- The third digit should represent the third letter 'B'.
- The fourth digit should represent the fourth letter 'I'.
- The fifth digit should represent the fifth letter 'T'.
Based on this pattern, we can conclude that the code for HABIT is 78192. Therefore, the correct answer is option B: 78192.
Given:
HAT is coded as 782
RABBIT is coded as 681192
Let's break down the codes and observe the pattern:
1. Code for HAT (782):
- The word HAT has three letters.
- The code consists of three digits.
- The first digit (7) represents the first letter 'H'.
- The second digit (8) represents the second letter 'A'.
- The third digit (2) represents the third letter 'T'.
2. Code for RABBIT (681192):
- The word RABBIT has six letters.
- The code consists of six digits.
- The first digit (6) represents the first letter 'R'.
- The second digit (8) represents the second letter 'A'.
- The third digit (1) represents the third letter 'B'.
- The fourth digit (1) represents the fourth letter 'B'.
- The fifth digit (9) represents the fifth letter 'I'.
- The sixth digit (2) represents the sixth letter 'T'.
From the given examples, we can observe that the code for each letter is determined by its position in the word. Therefore, the code for the word HABIT can be determined as follows:
- The word HABIT has five letters.
- The code should consist of five digits.
- The first digit should represent the first letter 'H'.
- The second digit should represent the second letter 'A'.
- The third digit should represent the third letter 'B'.
- The fourth digit should represent the fourth letter 'I'.
- The fifth digit should represent the fifth letter 'T'.
Based on this pattern, we can conclude that the code for HABIT is 78192. Therefore, the correct answer is option B: 78192.
Direction: There are four groups of letters in the following question. Of these, three are alike in some way and one of them is different. Identify the one that is different:- a)RATES
- b)TREAT
- c)GREAT
- d)HEARD
Correct answer is option 'D'. Can you explain this answer?
Direction: There are four groups of letters in the following question. Of these, three are alike in some way and one of them is different. Identify the one that is different:
a)
RATES
b)
TREAT
c)
GREAT
d)
HEARD
| | Kiran Reddy answered |
R, E,A,T appears is some order in all other words.
An insect crawls up 5 cm every second on a 60 cm vertical rod and then falls down 2 cm over the next second. How many seconds will it take to climb the rod?- a)10
- b)20
- c)30
- d)39
Correct answer is option 'D'. Can you explain this answer?
An insect crawls up 5 cm every second on a 60 cm vertical rod and then falls down 2 cm over the next second. How many seconds will it take to climb the rod?
a)
10
b)
20
c)
30
d)
39
 | Debanshi Dasgupta answered |
Calculation:
- The insect climbs 5 cm every second and falls 2 cm every second.
- So, in every 2 seconds, it climbs 5 cm - 2 cm = 3 cm.
- To climb a 60 cm rod, it will take 60 cm / 3 cm per 2 seconds = 20 cycles of 2 seconds each.
- Therefore, it will take 20 cycles x 2 seconds = 40 seconds to climb the rod.
Correct Answer: Option D) 39
- The insect climbs 5 cm every second and falls 2 cm every second.
- So, in every 2 seconds, it climbs 5 cm - 2 cm = 3 cm.
- To climb a 60 cm rod, it will take 60 cm / 3 cm per 2 seconds = 20 cycles of 2 seconds each.
- Therefore, it will take 20 cycles x 2 seconds = 40 seconds to climb the rod.
Correct Answer: Option D) 39
Jatin leaves his house and walks 12 km towards North. He turns right and walks another 12 km. He turns right again, walks 12 km more and turns left to walk 5 km. How far is he from his home and in which direction ?- a)7 km East
- b)10 km East
- c)17 km East
- d)24 km East
Correct answer is option 'C'. Can you explain this answer?
Jatin leaves his house and walks 12 km towards North. He turns right and walks another 12 km. He turns right again, walks 12 km more and turns left to walk 5 km. How far is he from his home and in which direction ?
a)
7 km East
b)
10 km East
c)
17 km East
d)
24 km East
| | Kiran Reddy answered |
(12 km + 5km = 17km)
A playground is in the form of a rectangle having semicircles on the shorter sides. Find its area when the length of the rectangular portion is 80 m and the breadth is 42 m.
- a)4746 m2
- b)4748 m2
- c)4950 m2
- d)5049 m2
Correct answer is option 'A'. Can you explain this answer?
A playground is in the form of a rectangle having semicircles on the shorter sides. Find its area when the length of the rectangular portion is 80 m and the breadth is 42 m.
a)
4746 m2
b)
4748 m2
c)
4950 m2
d)
5049 m2
 | Freak Artworks answered |
Radius of each of semi-circle
= 42/2 = 21m
The required area =2 x area of semi-circle EFA + area of rectangle ABDE
In a box, (3/4)th of the balls are red, (1/6)th are white and the rest are blue. If there are 3 blue balls in the box, how many are red?- a)9
- b)18
- c)27
- d)39
Correct answer is option 'C'. Can you explain this answer?
In a box, (3/4)th of the balls are red, (1/6)th are white and the rest are blue. If there are 3 blue balls in the box, how many are red?
a)
9
b)
18
c)
27
d)
39
 | Shobha kulkarni answered |
Given:
- (3/4)th of the balls are red
- (1/6)th are white
- Rest are blue
- 3 blue balls in the box
To find:
- Number of red balls
Solution:
Let the total number of balls in the box be 'x'.
- (3/4)x = number of red balls
- (1/6)x = number of white balls
- 3 = number of blue balls
We can find the total number of balls as follows:
x = (3/4)x + (1/6)x + 3
x - (3/4)x - (1/6)x = 3
(7/12)x = 3
x = (3*12)/7 = 36/7 (approx. 5.14)
Since the number of balls can only be a whole number, we can assume that there are 5 balls in the box.
- (3/4)*5 = 15/4 (approx. 3.75)
- (1/6)*5 = 5/6 (approx. 0.83)
- 5 - 3 = 2
Thus, there are 15/4 (approx. 3.75) red balls in the box.
Answer: Option C (27)
- (3/4)th of the balls are red
- (1/6)th are white
- Rest are blue
- 3 blue balls in the box
To find:
- Number of red balls
Solution:
Let the total number of balls in the box be 'x'.
- (3/4)x = number of red balls
- (1/6)x = number of white balls
- 3 = number of blue balls
We can find the total number of balls as follows:
x = (3/4)x + (1/6)x + 3
x - (3/4)x - (1/6)x = 3
(7/12)x = 3
x = (3*12)/7 = 36/7 (approx. 5.14)
Since the number of balls can only be a whole number, we can assume that there are 5 balls in the box.
- (3/4)*5 = 15/4 (approx. 3.75)
- (1/6)*5 = 5/6 (approx. 0.83)
- 5 - 3 = 2
Thus, there are 15/4 (approx. 3.75) red balls in the box.
Answer: Option C (27)
What is the value of 0 - 1 + 2 - 3 + 4 - 5 + 6 - 7 ........... - 17 + 18 - 19 + 20?- a)10
- b)15
- c)20
- d)25
Correct answer is option 'A'. Can you explain this answer?
What is the value of 0 - 1 + 2 - 3 + 4 - 5 + 6 - 7 ........... - 17 + 18 - 19 + 20?
a)
10
b)
15
c)
20
d)
25
| | Kiran Reddy answered |
0 - 1 + 2 - 3 + 4 - 5 + 6 - 7...... - 17 + 18 - 19 + 20
= 0 + (-1 + 2) + (-3 + 4) + (-5 + 6) + ...... + (-17 + 18) + (-19 + 20)
= 0 + 1 + 1 + ...... + 1 + 1 = 10
= 0 + (-1 + 2) + (-3 + 4) + (-5 + 6) + ...... + (-17 + 18) + (-19 + 20)
= 0 + 1 + 1 + ...... + 1 + 1 = 10
If' +' means' divided by '-',means ' added to', 'x' means 'subtracted from' and '÷' means 'multiplied by1, then what is the value of 24 ÷ 12 - 18 + 9 ?- a)- 25
- b)0.72
- c)15.30
- d)290
Correct answer is option 'D'. Can you explain this answer?
If' +' means' divided by '-',means ' added to', 'x' means 'subtracted from' and '÷' means 'multiplied by1, then what is the value of 24 ÷ 12 - 18 + 9 ?
a)
- 25
b)
0.72
c)
15.30
d)
290
 | Megha bhatia answered |
Understanding the Problem
To solve the expression "24 ÷ 12 - 18 + 9" using the unique definitions provided for the operators, we need to replace each symbol with its corresponding mathematical operation.
Symbol Replacement
- "+" means "divided by" (÷)
- "-" means "added to" (+)
- "x" means "subtracted from" (-)
- "÷" means "multiplied by 1" (×)
Let's rewrite the expression based on these definitions:
Expression Transcription
- Original: 24 ÷ 12 - 18 + 9
- Replacing symbols:
- 24 (multiplied by 1) 12 (added to) 18 (divided by) 9
This translates to:
24 × 12 + 18 ÷ 9
Calculating the Expression
1. Calculate 24 × 12:
24 × 12 = 288
2. Calculate 18 ÷ 9:
18 ÷ 9 = 2
3. Now add the results:
288 + 2 = 290
Final Result
Thus, the value of the expression "24 ÷ 12 - 18 + 9" after converting the symbols and performing the calculations is:
290
Therefore, the correct answer is option 'D'.
To solve the expression "24 ÷ 12 - 18 + 9" using the unique definitions provided for the operators, we need to replace each symbol with its corresponding mathematical operation.
Symbol Replacement
- "+" means "divided by" (÷)
- "-" means "added to" (+)
- "x" means "subtracted from" (-)
- "÷" means "multiplied by 1" (×)
Let's rewrite the expression based on these definitions:
Expression Transcription
- Original: 24 ÷ 12 - 18 + 9
- Replacing symbols:
- 24 (multiplied by 1) 12 (added to) 18 (divided by) 9
This translates to:
24 × 12 + 18 ÷ 9
Calculating the Expression
1. Calculate 24 × 12:
24 × 12 = 288
2. Calculate 18 ÷ 9:
18 ÷ 9 = 2
3. Now add the results:
288 + 2 = 290
Final Result
Thus, the value of the expression "24 ÷ 12 - 18 + 9" after converting the symbols and performing the calculations is:
290
Therefore, the correct answer is option 'D'.
Direction: Figures A and B are related in a particular manner. Establish the same relationship between Figures C and D by choosing a figure from amongst the alternatives, which would replace the question mark.Problem Figures
Answer Figures
- a)a
- b)b
- c)c
- d)d
Correct answer is option 'D'. Can you explain this answer?
Direction: Figures A and B are related in a particular manner. Establish the same relationship between Figures C and D by choosing a figure from amongst the alternatives, which would replace the question mark.
Problem Figures
Answer Figures
a)
a
b)
b
c)
c
d)
d
| | Kiran Reddy answered |
From fig. (B) to fig. (A), the straight lines are converted to curved lines (or arcs).
If 
find y in terms of x and z?- a)
- b)
- c)3x - z
- d)
Correct answer is option 'C'. Can you explain this answer?
If find y in terms of x and z?
find y in terms of x and z?a)
b)
c)
3x - z
d)
| | Kiran Reddy answered |
⇒ 3x = y + z
⇒ 3 x - z = y
What number should replace the question mark ?
- a)2
- b)9
- c)12
- d)19
Correct answer is option 'A'. Can you explain this answer?
What number should replace the question mark ?
a)
2
b)
9
c)
12
d)
19
| | Kiran Reddy answered |
Subtract the sum of the even numbers from the sum of the odd numbers.
7+9 = 16 9+3 = 12
2+4 = 6 4+6 = 10
16-6=10 12-10 = 2
7+9 = 16 9+3 = 12
2+4 = 6 4+6 = 10
16-6=10 12-10 = 2
Select from the alternative, the box that can be formed by folding the sheet shown in figure (X).
- a)A only
- b)A, B, and C only
- c)B and C only
- d)A, B, C and D
Correct answer is option 'D'. Can you explain this answer?
Select from the alternative, the box that can be formed by folding the sheet shown in figure (X).
a)
A only
b)
A, B, and C only
c)
B and C only
d)
A, B, C and D
| | Kiran Reddy answered |
When the sheet in fig.(X) is folded to form a cube, then the face bearing a dot appears opposite to a blank face, the face bearing a “+’ sign appears opposite to another blank face and the face bearing a circle appears opposite to the third blank face. Clearly, all the four cubes shown in figures (A), (B), (C) and (D) can be formed.
Directions: The total sales of a company (in crores) for different years are given in the following bar graph. Study the bar graph carefully and answer the following question.
Q. The percentage decrease in total sales in year 2009 to that in year 2008 is:- a)10%
- b)30%
- c)40%
- d)50%
Correct answer is option 'C'. Can you explain this answer?
Directions: The total sales of a company (in crores) for different years are given in the following bar graph. Study the bar graph carefully and answer the following question.
Q. The percentage decrease in total sales in year 2009 to that in year 2008 is:
a)
10%
b)
30%
c)
40%
d)
50%
| | Kiran Reddy answered |
Sales in year 2008 = 50
Sales in year 2009 = 30
Difference = 50 - 30 = 20
∴ Percentage decrease = 20/50 x 100 = 40%
Sales in year 2009 = 30
Difference = 50 - 30 = 20
∴ Percentage decrease = 20/50 x 100 = 40%
Direction: In the following examples there is a diagram marked (X), with one or more dots placed in it. The diagram is followed by four other figures, marked (a), (b), (c) and (d) only one of which is such as to make possible the placement of the alternative in each of these
- a)
- b)
- c)
- d)
Correct answer is option 'B'. Can you explain this answer?
Direction: In the following examples there is a diagram marked (X), with one or more dots placed in it. The diagram is followed by four other figures, marked (a), (b), (c) and (d) only one of which is such as to make possible the placement of the alternative in each of these
a)
b)
c)
d)
| | Kiran Reddy answered |
In figure (X), one of file dots lies in the region common to the circle and the triangle only and the other dot lies in the region common to die circle and die square only. In figures (a), (c) and (d), the region common to the circle and the triangle lies within the square. Only figure (b) contains a region common to the circle and the triangle only and also a region common to the circle and the square.
- a)11
- b)12
- c)22
- d)33
Correct answer is option 'C'. Can you explain this answer?
a)
11
b)
12
c)
22
d)
33
| | Kiran Reddy answered |
Moving clockwise,
We have: 594÷3 = 198:198÷3 = 66. So, missing number = 66 ÷ 3 = 22
We have: 594÷3 = 198:198÷3 = 66. So, missing number = 66 ÷ 3 = 22
Given a triangle ABC in which BC = 6 cm, ∠ABC = 120° and AB = 7 cm. What is the name of the triangle which can be drawn from the given data?- a)Equilateral triangle
- b)Obtuse angled triangle
- c)Right-angled triangle
- d)Isosceles triangle
Correct answer is option 'B'. Can you explain this answer?
Given a triangle ABC in which BC = 6 cm, ∠ABC = 120° and AB = 7 cm. What is the name of the triangle which can be drawn from the given data?
a)
Equilateral triangle
b)
Obtuse angled triangle
c)
Right-angled triangle
d)
Isosceles triangle
| | Kiran Reddy answered |
Obtuse angled triangle as ∠ABC = 120°.
In the given figure, ∠a is greater than one-sixth of the right angle, then:
- a)b > 165°
- b)b < 165°
- c)b ≤ 165°
- d)b ≥ 165°
Correct answer is option 'B'. Can you explain this answer?
In the given figure, ∠a is greater than one-sixth of the right angle, then:
a)
b > 165°
b)
b < 165°
c)
b ≤ 165°
d)
b ≥ 165°
| | Kiran Reddy answered |
As a > 1/6 (90°) => a > 15°
But a + b = 180° (linear Pair)
∴ b < 165°
But a + b = 180° (linear Pair)
∴ b < 165°
Directions: The total sales of a company (in crores) for different years are given in the following bar graph. Study the bar graph carefully and answer the following question.
Q. The average sales during these five years is:- a)₹ 40 crores
- b)₹ 50 crores
- c)₹ 60 crores
- d)₹ 70 crores
Correct answer is option 'B'. Can you explain this answer?
Directions: The total sales of a company (in crores) for different years are given in the following bar graph. Study the bar graph carefully and answer the following question.
Q. The average sales during these five years is:
a)
₹ 40 crores
b)
₹ 50 crores
c)
₹ 60 crores
d)
₹ 70 crores
| | Kiran Reddy answered |
Average sales
Three numbers A, B, and C are in the ratio 12 : 15 : 25. If the sum of these numbers is 312, then the ratio between the difference between B and A and the difference of C and B is- a)3 : 10
- b)7 : 3
- c)3 : 7
- d)10 : 3
Correct answer is option 'A'. Can you explain this answer?
Three numbers A, B, and C are in the ratio 12 : 15 : 25. If the sum of these numbers is 312, then the ratio between the difference between B and A and the difference of C and B is
a)
3 : 10
b)
7 : 3
c)
3 : 7
d)
10 : 3
| | Kiran Reddy answered |
A : B : C = 12 : 15 :25
Total parts = 52
One part = 312/52 = 6
∴ A = 12 x 6 = 72, B = 15 x 6 = 90, C = 25 x 6 = 150
Total parts = 52
One part = 312/52 = 6
∴ A = 12 x 6 = 72, B = 15 x 6 = 90, C = 25 x 6 = 150
Which of the following diagrams correctly represents the relationship among smokers, bidi smokers, cancer patients?- a)
- b)
- c)
- d)
Correct answer is option 'B'. Can you explain this answer?
Which of the following diagrams correctly represents the relationship among smokers, bidi smokers, cancer patients?
a)
b)
c)
d)
| | Kiran Reddy answered |
Bidi smokers is a subset of smokers cancer patient may be a smoker, bidi smoker and non smoker. Hence, third object shares a common relationship with first and second object as well.
Direction: In the question, first two given letter/number are related in some way. The same relation is in between third and fourth. Find out the correct answer among the alternatives.ACE:FGH::LNP?- a)QRS
- b)PQR
- c)QST
- d)MOQ
Correct answer is option 'A'. Can you explain this answer?
Direction: In the question, first two given letter/number are related in some way. The same relation is in between third and fourth. Find out the correct answer among the alternatives.
ACE:FGH::LNP?
a)
QRS
b)
PQR
c)
QST
d)
MOQ
| | Kiran Reddy answered |
The three letters of second word moved 5,4,3 and steps forward respectively.
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