Number Series Questions

Q:

What comes next in the series...

1A2, 3C4, 7G8, ___

A) 15O16 B) 16P17
C) 14O15 D) 13P14
 
Answer & Explanation Answer: A) 15O16

Explanation:

The first digit is formed by adding the numbers which are the results of powers of 2 increased by one and second letter is the corresponding alphabet to that number...last number is the next number to the first one...therefore

15=7+8 (i.e. 2^3)

O is corresponding alphabet to 15

and 16 comes after 15 

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18 35378
Q:

Find the next number in the given number series

1, 3, 10, 41, 206, ?

A) 1237 B) 897
C) 987 D) 1007
 
Answer & Explanation Answer: A) 1237

Explanation:

The given number series is 1, 3, 10, 41, 206, ?

It follows a pattern that,

1

1 x 2 + 1 = 3

3 x 3 + 1 = 10

10 x 4 + 1 = 41

41 x 5 + 1 = 206

206 x 6 + 1 = 1237

 

Hence, the next number in the given number series is 1237.

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12 34054
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 & Explanation 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 

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18 33230
Q:

Which digits will come in the place of '?' in the following series ?

372, 823, 644, 582, 46?, 8?7

A) 4, 4 B) 6, 2
C) 3, 2 D) 2, 5
 
Answer & Explanation Answer: B) 6, 2

Explanation:

Given series is 372, 823, 644, 582, 46?, 8?7

Here the series follow the rule that :
372 = 3+7+2 = 12
823 = 8+2+3 = 13
644 = 6+4+4 = 14
582 = 5+8+2 = 15
46? = 4+6+? = 16 => ? = 6
8?7 = 8+?+7 = 17 => ? = 2

So the missing numbers are 6 and 2

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21 32914
Q:

Find the next number in the given number series?

6, 6, 12, 36, 144, 720, ?

A) 4320 B) 3547
C) 2154 D) 1765
 
Answer & Explanation Answer: A) 4320

Explanation:

The given series is 6, 6, 12, 36, 144, 720, ?

6

6 x 1 = 6

6 x 2 = 12

12 x 3 = 36

36 x 4 = 144

144 x 5 = 720

720 x 6 = 4320

 

Hence, the next number in the given number series is 4320.

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12 32774
Q:

What will be the next term in 

BKS, DJT, FIU, HHV, __

A) IJX B) IGX
C) JGW D) JGU
 
Answer & Explanation Answer: C) JGW

Explanation:

Here the first letter of the group is moved with a gap of one letter, the second letter of the group is backwardness and the third letter of the group is forwardness proceeding like this we get the letter group "JGW"

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35 32481
Q:

CGE, RNP, FJH, OKM, IMK, __

 

A) JHL B) HJL
C) LHJ D) JKL
 
Answer & Explanation Answer: C) LHJ

Explanation:

Here it can be seen that it is not a continuous series.

so take alternative terms.

CGE, FJH, IMK and RNP, OKM,__

Between R and O there is a gap of two letters. so the first letter in the answer is L.Proceding like this the answer is LHJ

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14 31730
Q:

Find the next number in the series 5, 8, 16, 19, 57, 60, .....

 

A) 188 B) 256
C) 240 D) 180
 
Answer & Explanation Answer: C) 240

Explanation:

The pattern is x1+3, x 2, x1+3, x 3, x1+3, x 4

The next number=60x4=240

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30 31524