Question 53

Complete the series.

4, 5, 8, 15, 30, (…)

Solution

step by step explanation

Adding the next term is the concept to solve this type of problems

4+1=5

5+3=8

8+7=15

15+15=30

30+y=x

Now let's look at the series 1,3,7,15,y

1×2+1=3

3×2+1=7

7×2+1=15

15×2+1=31

y=31

Then X=30+y

X=30+31

X=61

Create a FREE account and get:

Download RRB Study Material PDF
45+ RRB previous papers with solutions PDF
300+ Online RRB Tests for Free

Follow us on

Boost your Prep!

Download App