Question

what should come in place of the question mark in the number series 32,31,60,177,704,3515


a) 21090

b) 21084

c) 21025

d) 21000​

Answer 1

32*1 -1 = 31
31*2 -2= 60
60*3 -3 = 177
177*4 -4= 704
704*5 -5= 3515
3515* 6 -6= 21084
answer is (b)

Answer 2

Option b - 21084

Step-by-step explanation:

Given : Series 32,31,60,177,704,3515

To find : What should come in place of the question mark in the number series ?

Solution :

Series 32,31,60,177,704,3515

We have to see the pattern which follows in the series,

Multiply 32 by 1 and subtract 1,

$32\times 1 -1 = 31$

Follow next number by 2,

$31\times 2 -2= 60$

Similarly following,

$60\times 3 -3 = 177$

$177\times 4 -4= 704$

$704\times 5 -5= 3515$

$3515\times 6 -6= 21084$

Therefore, the missing number is 21084.

So, Option b is correct.

#Learn more

What should come in place of the question mark (?) number series 17,17,51,255,1785,16065​

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