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Test: Number System- 4 - Banking Exams MCQ


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20 Questions MCQ Test Quantitative Aptitude for Competitive Examinations - Test: Number System- 4

Test: Number System- 4 for Banking Exams 2024 is part of Quantitative Aptitude for Competitive Examinations preparation. The Test: Number System- 4 questions and answers have been prepared according to the Banking Exams exam syllabus.The Test: Number System- 4 MCQs are made for Banking Exams 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Number System- 4 below.
Solutions of Test: Number System- 4 questions in English are available as part of our Quantitative Aptitude for Competitive Examinations for Banking Exams & Test: Number System- 4 solutions in Hindi for Quantitative Aptitude for Competitive Examinations course. Download more important topics, notes, lectures and mock test series for Banking Exams Exam by signing up for free. Attempt Test: Number System- 4 | 20 questions in 15 minutes | Mock test for Banking Exams preparation | Free important questions MCQ to study Quantitative Aptitude for Competitive Examinations for Banking Exams Exam | Download free PDF with solutions
Test: Number System- 4 - Question 1
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The sum of 3 consecutive even number is 40 more than the average of these numbers. Which of the following is the 2 largest number ?

Detailed Solution for Test: Number System- 4 - Question 1

X+x+2+x+4 = 40+(x+x+2+x+4)/3
3x+6 = 40+ (3x+6)/3
(9x+18 – 3x-6)/3= 40
6x + 12 = 120
X = 108/6 = 18
18+2 = 20

Test: Number System- 4 - Question 2
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The sum of 3 consecutive number is 1251, Find the largest even number ?

Detailed Solution for Test: Number System- 4 - Question 2

X+x+1+x+2 = 1251
3x+3 = 1251
X = 1248/3 = 416
X+2 = 416+2 = 418

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Test: Number System- 4 - Question 3
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What is the least number that can be added to 7218 make it a perfect square ?

Detailed Solution for Test: Number System- 4 - Question 3

85*85 = 7225

Test: Number System- 4 - Question 4
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If a = -2 and b = -5 then find the value of a3 + b3– a2 + b2 + 2a – 3b
Detailed Solution for Test: Number System- 4 - Question 4

a3 + b3– a2 + b2 + 2a – 3b
(-2)3 + (-5)3 – (-2)2 + (-5)2 + 2(-2) – 3(-5) = -8 -125-4+25-4+15 = -101

Test: Number System- 4 - Question 5
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x+(1/x) = 2, then find the value of x + (-1/x)
Detailed Solution for Test: Number System- 4 - Question 5

X+(1/X) = 2 ;

(X^2+ 1)/ X = 2 ;

X^2+1 = 2X ;

X^2 - 2X + 1= 0 ;

By factorisation method ,

X = 1 ;

Now substitute X= 1 in X +(-1/X) ;

we get , 1 - 1/1 = 0 ;

Therefore , X = 0 ;

Test: Number System- 4 - Question 6
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The average of 7 consecutive number is n, if the next 2 number also included then the new average will be increased by ?
Detailed Solution for Test: Number System- 4 - Question 6

Avg of 7 no= (7+1)/2 = 8/2 = 4
Avg of 9 no = (9+1)/2 = 5
5- 4 = 1
Hence increased by 1

Test: Number System- 4 - Question 7
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When a positive number n is divided by 7 leaves the remainder 2, when 3n is divided by the same number, then the remainder is
Detailed Solution for Test: Number System- 4 - Question 7

N = 7+2 =9
3n = 27
27/7 = 6

Test: Number System- 4 - Question 8
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The number of prime factors of 510510
Detailed Solution for Test: Number System- 4 - Question 8

2*3*5*7*11*13*17 = 510510

Test: Number System- 4 - Question 9
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25% of a number is 2 time 65% of another number.Find the ratio of the second no to the first number ?
Detailed Solution for Test: Number System- 4 - Question 9

(a*25)/100 = b(2*65)/100
a*25 = b*130
a/b = 130/25 = 26/5
b:a = 5:26

Test: Number System- 4 - Question 10
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Which one cannot be the square of a natural number ?
Detailed Solution for Test: Number System- 4 - Question 10

Square number can never end in 2,7

Test: Number System- 4 - Question 11
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When a number is subtracted from the number 8,12 and 20, the remainders are in continued proportion, Find the number ?
Detailed Solution for Test: Number System- 4 - Question 11

8-x / 12 –x = 12-x /20 –x
(8-x)(20-x) = (12 – x)(12 –x)
160 – 8x – 20x + x2 = 144 – 12x – 12x + x2
4x = 16
x = 4

Test: Number System- 4 - Question 12
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Sum of the three consecutive number is 1956. What is 23% of the highest number ?
Detailed Solution for Test: Number System- 4 - Question 12

X+x+1+x+2 = 1956
3x = 1956 – 3 = 1953
X = 1953/3 = 651
X+3 = 653
23% of largest num = 23*653/100 = 150.19

Test: Number System- 4 - Question 13
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If the numerator of a fraction is increased by 100% and the denominator is increased by 200%. The resultant fraction is 1 (1/15), What was the original fraction ?
Detailed Solution for Test: Number System- 4 - Question 13

1(1/15) = 16/15
X+x/y+2y = 16/15
2x/3y = 16/15
x/y = (16*3) / (15*2) = 8/5 = 1(3/5)

Test: Number System- 4 - Question 14
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Which of the following number is divisible by 11 ?
Detailed Solution for Test: Number System- 4 - Question 14

(9+3+4+7) – (2+4+5+1) = 11

Test: Number System- 4 - Question 15
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The sum of square of 2 number is 1972 and the difference of their square is 620. Find the number ?
Detailed Solution for Test: Number System- 4 - Question 15

X2 + y2 = 1972
X2 – y2 = 620
Solve this
2x2 = 2592
x = 1296
x = 36
y2 = 1972 – 1296
y2 = 676
y = 26

Test: Number System- 4 - Question 16
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Product of one fourth of the number and 120% of another number is what % of the product of the original number ?
Detailed Solution for Test: Number System- 4 - Question 16

x/4 = one fourth of the no
120y/100 = another no = 6y/5
% = [(x/4 * 6y/5)*100] / xy
= 600/20 = 30%

Test: Number System- 4 - Question 17
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Find the 5 digit number, 5th digit is one fourth of the 3rd digit and one half of the 4th digit. 3rd digit is one half of the 1st digit. 2nd digit is 5 more than the 5th digit.
Detailed Solution for Test: Number System- 4 - Question 17

Test: Number System- 4 - Question 18
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What is the no of zeroes at the end of the product of the no from1 to 100 ?
Detailed Solution for Test: Number System- 4 - Question 18

100/5 + 100/25 = 20+4 = 24

Test: Number System- 4 - Question 19
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x+y = 8 and x/y = 7 ,find y
Detailed Solution for Test: Number System- 4 - Question 19

7y+y = 4
8y = 8 Y = 1

Test: Number System- 4 - Question 20
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If three numbers are added in pairs, the sums equal to 11,16 and 23.Find the three numbers
Detailed Solution for Test: Number System- 4 - Question 20

X+y = 11 - (1)
Y+z = 16 - (2)
Z+x = 23 -(3)

Add (1), (2), and (3)

2(x + y + z) = 50
X+y+z = 25
X = 25 – 16 = 9
y = 25 – 23 = 2
z = 25 – 11 = 14

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