Sawaal
17
Q:

Which Number would come in place of the underline mark in the series.

3, 9, 21, ___ , 93

A) 39 B) 45
C) 48 D) 51

Answer:   B) 45



Explanation:

First difference is 6 and second is 12. But if we take third as 18, then fourth difference will be 24. Then 93 can not be the last term.

So we have to take the difference as 6, 12, 24 and 48. 

So Answer is 21+24 = 45 

Subject: Number Series
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A) 9 B) 12
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Answer & Explanation Answer: A) 9

Explanation:

The given sequence is a combination of three series:
i)1st, 4th, 7th terms i.e, 2, 4, 9
ii)2nd, 5th, 8th terms i.e, 3, 6, 12
iii)3rd, 6th, 9th terms i.e, 4, 8, 16
In each one of i, ii, iii, each term is twice the preceding term.
So, 9 is wrong and must be replaced by (4*2) = 8

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Answer & Explanation Answer: A) 39

Explanation:

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So, 39 is wrong and must be replaced by (15 * 2 + 1) = 31

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Find out the wrong term in the series 125, 126, 124, 127, 123, 129

A) 129 B) 125
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Answer & Explanation Answer: A) 129

Explanation:

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Q:

Find out the wrong term in the series 2, 5, 10, 50, 500, 5000

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Answer & Explanation Answer: A) 5000

Explanation:

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Find out the wrong term in the series 83,92,85,90,85,88

A) 85 B) 88
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Answer & Explanation Answer: A) 85

Explanation:

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Find out the wrong term in the series 4,8,15,25,36,54

A) 28 B) 38
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Answer & Explanation Answer: B) 38

Explanation:

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Q:

Find out the wrong term in the series 169,144,121,100,85,64

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Explanation:

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Q:

Choose the correct alternative that will continue the same pattern and replace 'x' in the series 31,45,35,47,39,x,43,51,47,53

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Answer & Explanation Answer: B) 49

Explanation:

The given sequence is a combination of two series
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Filed Under: Number Series

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