Q:

Insert the missing number.

7, 26, 63, 124, 215, 342, (....)

A) 391 B) 421
C) 481 D) 511
 
Answer & Explanation Answer: D) 511

Explanation:

Numbers are (23 - 1), (33 - 1), (43 - 1), (53 - 1), (63 - 1), (73 - 1) etc.

So, the next number is (83 - 1) = (512 - 1) = 511.

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375 138025
Q:

Find the odd man out.

41, 43, 47, 53, 61, 71, 73, 81

A) 41 B) 61
C) 71 D) 81
 
Answer & Explanation Answer: D) 81

Explanation:

Each of the numbers except 81 is a prime number.

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145 147572
Q:

Insert the missing number.

8, 7, 11, 12, 14, 17, 17, 22, (....)

A) 20 B) 22
C) 24 D) 27
 
Answer & Explanation Answer: A) 20

Explanation:

There are two series (8, 11, 14, 17, 20) and (7, 12, 17, 22) increasing by 3 and 5 respectively.

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110 80276
Q:

Insert the missing number.

2, 4, 12, 48, 240, (....)

A) 960 B) 1440
C) 1080 D) 1920
 
Answer & Explanation Answer: B) 1440

Explanation:

Go on multiplying the given numbers by 2, 3, 4, 5, 6.

So, the correct next number is 1440.

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107 76459
Q:

Find the odd man out?

396, 462, 572, 427, 671, 264.

A) 671 B) 462
C) 427 D) 264
 
Answer & Explanation Answer: C) 427

Explanation:

Here the given series is 396, 462, 572, 427, 671, 264.

In all the terms, the middle digit is the sum of first and third digit except 427.

 

So the Odd number in the given series is 427.

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Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

105 113190
Q:

Find the odd man out.

2, 5, 10, 17, 26, 37, 50, 64

A) 50 B) 37
C) 26 D) 64
 
Answer & Explanation Answer: D) 64

Explanation:

(1*1)+1 , (2*2)+1 , (3*3)+1 , (4*4)+1 , (5*5)+1 , (6*6)+1 , (7*7)+1 , (8*8)+1

But, 64 is out of pattern.

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98 149133
Q:

Find the odd man out.

6, 9, 15, 21, 24, 28, 30

A) 28 B) 21
C) 24 D) 30
 
Answer & Explanation Answer: A) 28

Explanation:

Each of the numbers except 28, is a multiple of 3.

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83 102678
Q:

Insert the missing number.

2, 6, 12, 20, 30, 42, 56, (....)

A) 61 B) 64
C) 72 D) 70
 
Answer & Explanation Answer: C) 72

Explanation:

The pattern is 1 x 2, 2 x 3, 3 x 4, 4 x 5, 5 x 6, 6 x 7, 7 x 8.

So, the next number is 8 x 9 = 72.

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83 79642