Question

8) Look at this series: 31, 29, 24, 22, 17, ... What number should come next?
A. 15
B. 14
C. 13
D. 12

Answer 1

Hi friend , Here's the required answer:-

The answer is A. 15.

As you can see the numbers are decreasing. The first is decreasing by 2 and the second by 5 and so on...

Hope this helps you...

Answer 2

A. 15
=======================

31, 29, 24, 22, 17, .....

Here, in the series "31, 29, 24, 22, 17, .....", number is decreasing, first by 2 and then by 5.

See there,

31 - 2 = 29

29 - 5 = 24

24 - 2 = 22

22 - 5 = 17

So, the number which should come next = 17 - 2

= 15.

After that, the next number would be:-

15 - 5 = 10

10 - 2 = 8

8 - 5 = 3

3 - 2 = 1

31, 29, 24, 22, 17, 15, 10, 8, 3, 1, ..........