Number Series Questions

Q:

Find the next number in the given sequence?

11, 17, 39, 85, ?

A) 133 B) 143
C) 153 D) 163
 
Answer & Explanation Answer: D) 163

Explanation:

Her the given number series is 11, 17, 39, 85, ?

 

 

1111 + 32 - 3 = 1717 + (52 - 3) = 3939 + (72 - 3) = 8585 + (92 - 3) = 163

 

Hence, the next number in the given sequence is 163.

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23 19979
Q:

What will come in the place of the (?) in the following number series ?

5 14 45 130 (?) 1182

A) 222 B) 397
C) 404 D) 415
 
Answer & Explanation Answer: B) 397

Explanation:

The pattern of given series is :

5

14 = (5x3) - 1

45 = (14x3) + 3

130 = (45x3) - 5

(?) = (130x3) + 7

=> (?) = 397

1182 = (397x3) - 9

Thus, the missing number is 397.

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41 18857
Q:

Find the wrong number in the following series?

1500, 1475, 1448, 1419, 1389, 1355, 1320

A) 1475 B) 1419
C) 1389 D) 1355
 
Answer & Explanation Answer: C) 1389

Explanation:

Take a look at the below sereies :

1500 - 25 = 1475

1475 - 27 = 1448

1448 - 29 = 1419

1419 - 31 = 1388

1388 - 33 = 1355

1355 - 35 = 1320

It clearly shows 1389 is Wrong Number

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21 18760
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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20 18121
Q:

In the following question, various terms of an alphanumerical series are given with one or more terms missing as shown by (?).Choose the missing terms out of the given alternatives. 2Z5, 7Y7, 14X9, 23W11, 34V13, ?

A) 47U15 B) 47V14
C) 45U15 D) 27U24
 
Answer & Explanation Answer: A) 47U15

Explanation:

The first numbers increase by 5, 7, 9, 11....
The letters move one step backward.
The last numbers are consecutive odd numbers.

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347 17929
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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28 17896
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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16 17215
Q:

What is the number that should come in the place of question mark ?

1050    420    168     67.2     ?

A) 19.11 B) 14.25
C) 10.752 D) 26.88
 
Answer & Explanation Answer: D) 26.88

Explanation:

Given series follows the rule of

1050/2.5 = 420
420/2.5 = 168
168/2.5 = 67.2
so 67.2/2.5 = 26.88

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17 16493