Question

Fill in the next number in the series: 10, 17, 13, 20, 16, 23…

Answer 1

Answer:

10,17,13,20,16,23

by making them a separate series based on their differences

10,13,16

17,20,23

finding relation between the first series we get

10+3=13

13+3=16

16+3=19

therefore,19 is the answer