Aptitude and Reasoning Questions

Q:

Find the average of first 50 natural numbers?

A) 25 B) 25.5
C) 26 D) 26.5
 
Answer & Explanation Answer: B) 25.5

Explanation:

We Know that sum of the n natural numbers =n(n+1)2

  

Then sum of 50 natural numbers= 50(51)2= 1250

  

Average of the 50 natural numbers = 125050 = 25.5

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Filed Under: Average
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22 4042
Q:

In how many different ways can the letters of the word 'POVERTY' be arranged ?

A) 2520 B) 5040
C) 1260 D) None
 
Answer & Explanation Answer: B) 5040

Explanation:

The 7 letters word 'POVERTY' be arranged in 7P7 ways = 7! = 5040 ways.

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Filed Under: Permutations and Combinations
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13 4042
Q:

Group the given figures into three classes using each figure only once.

A) 1,5,8 ; 3,4,7 ; 2,6,9 B) 1,3,6 ; 4,5,9 ; 2,7,8
C) 1,3,6 ; 2,5,7 ; 4,8,9 D) 6,7,8 ; 1,3,7 ; 2,4,9
 
Answer & Explanation Answer: C) 1,3,6 ; 2,5,7 ; 4,8,9

Explanation:

1, 3, 6 contain one complete circle each.

2, 5, 7 contain a semi-circle each. 

4, 8, 9 contain a triangle each.

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Filed Under: Grouping of Images

20 4036
Q:

If a = 5 + 15 - 1 b = 5 - 15 + 1 then find the value of a2+ab+b2a2-ab+b2 is ::

A) 3/4 B) 4/3
C) 3/5 D) 5/3
 
Answer & Explanation Answer: B) 4/3

Explanation:

By simplifying, we get 4/3

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Filed Under: Square Roots and Cube Roots
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7 4035
Q:

Find the compound interest on Rs. 2680 at 8% per annum for 2 years ?

A) Rs. 664.21 B) Rs. 548.68
C) Rs. 445.95 D) Rs. 692.57
 
Answer & Explanation Answer: C) Rs. 445.95

Explanation:

We know Compound Interest = C.I. = P1+r100t - 1

Here P = 2680, r = 8 and t = 2

C.I. = 26801 + 81002-1= 268027252-12= 26802725+12725-1= 2680 5225×225

= (2680 x 52 x 2)/625

= 445.95

 

Compound Interest = Rs. 445.95

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Filed Under: Compound Interest
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12 4034
Q:

 Which of the following means O is a father of two children ?

A) O @ M # N B) O # N # M
C) O @ N # M D) N # O $ M
 
Answer & Explanation Answer: C) O @ N # M

Explanation:

 O @ N # M means O is the father of N who is the sister of M i.e. O is a father of two children.

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Filed Under: Blood Relations
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2 4034
Q:

If x varies as y and x = 8 when y = 15 then the value of x when y = 10 is:

A) 5 B) 15/8
C) 8/15 D) 16/3
 
Answer & Explanation Answer: D) 16/3

Explanation:

x : y = 8 : 15
If y = 10, x = 8/15 X 10
y = 16/3

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Filed Under: Simplification
Exam Prep: Bank Exams

2 4030
Q:

If the side of square is increased by 6%, then what will be the percentage increase in its area?

A) 3.2 B) 12.04
C) 12.12 D) 12.36
 
Answer & Explanation Answer: D) 12.36

Explanation:
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Filed Under: Percentage
Exam Prep: Bank Exams

2 4021