Quantitative Aptitude - Arithmetic Ability Questions

Q:

Find the odd man out of the series?

128, 32, 14, 2.66, 0.88

A) 32 B) 14
C) 2.66 D) 0.88
 
Answer & Explanation Answer: B) 14

Explanation:

Here the given series is 128, 32, 14, 2.66, 0.88

 

128 / 4 = 32

32 / 3 = 10.666

10.666 / 4 = 2.666

2.666 / 3 = 0.888

 

Hence, the odd man in the given number series is 14.

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7 56060
Q:

Suppose 0 < θ < 90, then for every θ 4 sin2 θ + 1 is greater than or equal to ?

 

A) 2 B) 4 sin θ 
C) 4 cos θ  D) 4 tan θ
 
Answer & Explanation Answer: B) 4 sin θ 

Explanation:
We know that,
Arithmetic mean ≥ Geometric mean
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Filed Under: Simplification
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6 55814
Q:

Find out the wrong term in the following number series.

4, 16, 37, 58, 81.

A) 16 B) 37
C) 81 D) 4
 
Answer & Explanation Answer: C) 81

Explanation:

The series follows the following pattern.

 

4

 

16 = 42

 

37 = 12+62

 

58 = 32+72

 

81 52+82.

 

Here every number is based on the digits of previous number. Hence, 81 is the wrong number in the given series.

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Filed Under: Odd Man Out
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5 55727
Q:

Simplify: (157 x 157 + 143 x 143)

 

A) 45098 B) 46098
C) 90196   D) 91196
 
Answer & Explanation Answer: A) 45098

Explanation:
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Exam Prep: Bank Exams , CAT

0 55479
Q:

Correct expression of 0.12636¯ = ?

 

A) 139/1100 B) 126 361000
C) 1392200 D) 1263610000
 
Answer & Explanation Answer: A) 139/1100

Explanation:
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5 55474
Q:

Find the value of

199992 x 200008 = ?

A) 39999799936 B) 39999999836
C) 39999999936 D) 39999999926
 
Answer & Explanation Answer: C) 39999999936

Explanation:
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0 55467
Q:

What is the value of (1/√3 - sin45)?

 

A) 1/2√3   B) (√2-√3)/√6  
C) 1-√2   D) (4-√3)/2
 
Answer & Explanation Answer: B) (√2-√3)/√6  

Explanation:
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0 55420
Q:

The total age of A and B is 12 years more than the total age of B and C. C is how many years younger than A ?

A) 12 B) 13
C) 14 D) 15
 
Answer & Explanation Answer: A) 12

Explanation:

(A+B) - (B+C) = 12

 

A - C = 12.

 

C is younger than A by 12 years.

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Filed Under: Problems on Ages

295 55323