SSC CHSL 12 Oct 2020 Shift 3 Paper

Question : 38 of 100

Marks: +1, -0

Select the number that can replace the question mark (?) in the following series.

2,7,5,2,3,1

, ?

Solution:

Given series,

2,7,5,2,3,1

, ?
In this series, the number is equal to the difference of the two preceeding number,

7-2=5

7-5=2

5-2=3

3-2=1

∴

3-1=2

∴ ? = 2

Go to Question:

Prev Question

Next Question