Question 3

Which number will replace the question mark (?) in the following series?
5, 12, 26, 54, ?

Solution

The logic here is

12 - 5 = 7

26 - 12 = 14

54 - 26 = 28

The difference between consecutive numbers in the series is twice the previous difference. The next difference will be 56.

Let the required number = a

Similarly,

a - 54 = 56

$$\Rightarrow$$  a = 110

$$\therefore\ $$The required number = 110

Hence, the correct answer is Option C


Create a FREE account and get:

  • Free SSC Study Material - 18000 Questions
  • 230+ SSC previous papers with solutions PDF
  • 100+ SSC Online Tests for Free

cracku

Boost your Prep!

Download App