Question

Here are some numbers.

8 11 13 18 25 37
8 13 18 is an arithmetic progression and the rule is to add 5.
Use three of the numbers to make a different arithmetic progression.
Describe the rule.

Answer 1

11,18,25

Explanation:

11,18,25 is the new arithmetic progression the rule is add 7

Answer 2

Below.

Explanation:

11 18 25 is also an A. P. and the rule is add 7.