All Exams >
UPSC >
CSAT Preparation >
All Questions
All questions of Mathematical Operations for UPSC CSE Exam
Find out the two signs to be interchanged for making the equation correct
50/50 + 50 × 50 - 50 = 50
- a)+ and –
- b)/ and /
- c)× and /
- d)+ and /
Correct answer is option 'D'. Can you explain this answer?
Find out the two signs to be interchanged for making the equation correct
50/50 + 50 × 50 - 50 = 50
50/50 + 50 × 50 - 50 = 50
a)
+ and –
b)
/ and /
c)
× and /
d)
+ and /
|
Shubham Ghosh answered |
The two signs to be interchanged are the forward slashes (/) and the minus sign (-) to make the equation correct:
50-50=0
50-50=0
Find out the two signs to be interchanged for making the equation correct
5+3×8−12÷4=3
- a)+ and ×
- b)− and ÷
- c)– and ×
- d)+ and /
Correct answer is option 'B'. Can you explain this answer?
Find out the two signs to be interchanged for making the equation correct
5+3×8−12÷4=3
5+3×8−12÷4=3
a)
+ and ×
b)
− and ÷
c)
– and ×
d)
+ and /
|
Ishaan Choudhary answered |
The equation is incomplete and cannot be solved.
Find out the two signs to be interchanged for making the equation correct
53 - 3 × 3/53 + 53 = 53- a)/ and +
- b)/ and –
- c)/ and ×
- d)None of the above
Correct answer is option 'C'. Can you explain this answer?
Find out the two signs to be interchanged for making the equation correct
53 - 3 × 3/53 + 53 = 53
53 - 3 × 3/53 + 53 = 53
a)
/ and +
b)
/ and –
c)
/ and ×
d)
None of the above
|
Master Training Institute answered |
By making changes as suggested in option C, we will get the solution as given on the RHS side.
(bc + de) × ab is equal to
- a)684
- b)816
- c)916
- d)1564
Correct answer is option 'B'. Can you explain this answer?
(bc + de) × ab is equal to
a)
684
b)
816
c)
916
d)
1564
|
Rhea Reddy answered |
Given expression = (23 + 45) × 12 = 68 × 12 = 816.
Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the following equation11 * 15 * 78 * 6 * 18 * 160- a)×, +, ÷, -, =
- b)+, ×, ÷, -, =
- c)×, +, -, ÷, =
- d)×, +, -, ÷, =
Correct answer is option 'A'. Can you explain this answer?
Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the following equation
11 * 15 * 78 * 6 * 18 * 160
a)
×, +, ÷, -, =
b)
+, ×, ÷, -, =
c)
×, +, -, ÷, =
d)
×, +, -, ÷, =
|
Ananya Deshmukh answered |
1) ×, +, ÷, -, =
Given expression: 11 * 15 * 78 * 6 * 18 * 160
After replacing the * by the signs, we get:
11 × 15 + 78 ÷ 6 - 18 = 160
⇒ 165 + 13 – 18 = 160
⇒ 178 – 18 = 160
⇒ 160 = 160
2) +, ×, ÷, -, =
Given expression: 11 * 15 * 78 * 6 * 18 * 160
After replacing the * by the signs, we get:
11 + 15 × 78 ÷ 6 - 18 = 160
⇒ 11 + 15 × 13 – 18 = 160
⇒ 11 + 195 – 18 = 160
⇒ 205 – 18 = 160
⇒ 187 ≠ 160
3) ×, +, -, ÷, =
Given expression: 11 * 15 * 78 * 6 * 18 * 160
After replacing the * by the signs, we get:
11 × 15 + 78 - 6 ÷ 18 = 160
⇒ 165 + 78 – 0.33 = 160
⇒ 243 – 0.33 = 160
⇒ 242.67 ≠ 160
4)+, ×, -, ÷, =
Given expression: 11 * 15 * 78 * 6 * 18 * 160
After replacing the * by the signs, we get:
11 + 15 × 78 - 6 ÷ 18 = 160
⇒ 11 + 1170 – 0.33 = 160
⇒ 1181 – 0.33 = 160
⇒ 1180.67 ≠ 160
If ‘+’ means ‘minus’, ‘x’ means ‘divided by’, ‘÷’ means ‘plus’ and ‘-’, means ‘multiplied by’, then which of the following will be the value of the expression 252 × 9 - 5 + 32 ÷ 92?- a)95
- b)168
- c)192
- d)200
Correct answer is option 'D'. Can you explain this answer?
If ‘+’ means ‘minus’, ‘x’ means ‘divided by’, ‘÷’ means ‘plus’ and ‘-’, means ‘multiplied by’, then which of the following will be the value of the expression 252 × 9 - 5 + 32 ÷ 92?
a)
95
b)
168
c)
192
d)
200
|
Abhishek Das answered |
You could have any superpower, what would it be?
If + means x, x means -, ÷ means + and - means ÷, then which of the following gives the result of 175 - 25 ÷ 5 + 20 × 3 + 10?- a)77
- b)160
- c)240
- d)2370
Correct answer is option 'A'. Can you explain this answer?
If + means x, x means -, ÷ means + and - means ÷, then which of the following gives the result of 175 - 25 ÷ 5 + 20 × 3 + 10?
a)
77
b)
160
c)
240
d)
2370
|
Shounak Desai answered |
Calculation:
1. Given:
- If + means x
- x means -
- ÷ means +
- - means ÷
2. Expression:
175 - 25 ÷ 5 + 20 x 3 + 10
3. Convert the expression:
- 175 x 25 + 5 ÷ 20 - 3 ÷ 10
4. Solve the expression:
- 4375 + 1 - 0.3
- 4376.7
5. Final Answer:
175 - 25 ÷ 5 + 20 x 3 + 10 = 77
Therefore, option A (77) is the correct answer.
1. Given:
- If + means x
- x means -
- ÷ means +
- - means ÷
2. Expression:
175 - 25 ÷ 5 + 20 x 3 + 10
3. Convert the expression:
- 175 x 25 + 5 ÷ 20 - 3 ÷ 10
4. Solve the expression:
- 4375 + 1 - 0.3
- 4376.7
5. Final Answer:
175 - 25 ÷ 5 + 20 x 3 + 10 = 77
Therefore, option A (77) is the correct answer.
If 0 is to be replaced by 1, 1 is replaced by 2……. 7 is replaced by 8 and 8 is replaced by 9 and 9 is replaced by 0. Then answer the following question.
1234 + 5678- a)9132
- b)9134
- c)8976
- d)5365
Correct answer is option 'B'. Can you explain this answer?
If 0 is to be replaced by 1, 1 is replaced by 2……. 7 is replaced by 8 and 8 is replaced by 9 and 9 is replaced by 0. Then answer the following question.
1234 + 5678
1234 + 5678
a)
9132
b)
9134
c)
8976
d)
5365
|
Ashish Shah answered |
If 0 is to be replaced by 1, and 1 is replaced by 2, then the sequence would be as follows:
0 => 1
1 => 2
2 => 3
3 => 4
4 => 5
and so on.
0 => 1
1 => 2
2 => 3
3 => 4
4 => 5
and so on.
Chapter doubts & questions for Mathematical Operations - CSAT Preparation 2025 is part of UPSC CSE exam preparation. The chapters have been prepared according to the UPSC CSE exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for UPSC CSE 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
Chapter doubts & questions of Mathematical Operations - CSAT Preparation in English & Hindi are available as part of UPSC CSE exam.
Download more important topics, notes, lectures and mock test series for UPSC CSE Exam by signing up for free.
CSAT Preparation
210 videos|138 docs|138 tests
|
Signup to see your scores go up within 7 days!
Study with 1000+ FREE Docs, Videos & Tests
10M+ students study on EduRev
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup