Question

The next term in the following series will be:
5,7,10,26,17,63,26?

Answer 1

The series is made up of two parts :

First sequence : 5,10,17,26 

5+5=10
10+7=17
17+9=26


Second sequence : 7,26,63,?

2³ - 1 =7

3³ - 1 = 26

4³ - 1=63

5³ - 1 =124

So the second series is : 7,26,63,124