Number Series Questions

Q:

What should be replaced in the place of '?' in the following series ?

JAK, KBL, LCM, MDN, ?

A) MEN B) NEM
C) NEO D) OEP
 
Answer & Explanation Answer: C) NEO

Explanation:

This is an alternating series in alphabetical order. The middle letters follow the order ABCDE. The first and third letters are alphabetical beginning with J. The third letter is repeated as a first letter in each subsequent three-letter segment.

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6 14777
Q:

In the folowing questions pickout the most sutiable substitute for the question mark?

6 : 222 :: 25 : ?

A) 650 B) 15625
C) 15650 D) 15600
 
Answer & Explanation Answer: C) 15650

Explanation:

63+6=222 

Similarly , 253+25=15650

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22 14469
Q:

Pick the odd one out from the given number series?

21, 24, 33, 49, 74

A) 21 B) 24
C) 33 D) 49
 
Answer & Explanation Answer: A) 21

Explanation:

The given number series follows a pattern that,

19 + 12 = 20 (not 21)20 + 22 = 2424 + 32 = 3333 + 42 = 4949 + 52 = 74 

 

Hence, the odd number in the given number series is 21.

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7 14295
Q:

Find out the wrong term in the series 1, 5, 9, 15, 25, 37, 49

A) 15 B) 49
C) 25 D) 37
 
Answer & Explanation Answer: A) 15

Explanation:

The terms of the given series is 1*1, 2*2 + 1, 3*3, 4*4 +1, 5*5, 6*6 + 1, . . . . .
So, 15 is wrong and must be replaced by (4*4 + 1) = 17

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42 14098
Q:

What is to be replaced in place of '?' in the following series ?

 A2BC, ?, ABC4, A5BC

A) A3BC

B) ABC3

C) AB3C

D) A2B3C4

A) Option A B) Option B
C) Option C D) Option D
 
Answer & Explanation Answer: C) Option C

Explanation:

Because the letters are the same, concentrate on the number series, which is a simple 2, 3, 4, 5, 6 series, and follows each letter in order.

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6 13929
Q:

In the following sum, “?” stands for which digit ?


8 + ?8 + 28 + 83 + 8? = 2?8

A) 4 B) 3
C) 2 D) 1
 
Answer & Explanation Answer: D) 1

Explanation:

By trial and error method from the given options,

'1' satisfies the above given equation.

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10 13907
Q:

Find the next number in the given number series?

8, 11, 19, 23, 32, ?

A) 37 B) 39
C) 47 D) 49
 
Answer & Explanation Answer: A) 37

Explanation:

The given number series is 8, 11, 19, 23, 32, ?

It follows a pattern that

8 + 11 = 19

11 + 12 = 23

19 + 13 = 32

23 + 14 = 37

32 + 15 = 47

....

 

Hence, the next number in the given series = 37.

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12 13748
Q:

Choose the missing terms in the given series from the four alternatives given below.

GMQ, JOT, MQW, ?

A) PTZ B) ORY
C) VXY D) PSZ
 
Answer & Explanation Answer: D) PSZ

Explanation:

The first letter moves three steps forward. The second letter moves two steps forward. The third letter moves three steps forward.

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7 13683