Question

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

Answer 1

`Progression: 11, 18, 25`

`Rule: Add\ 7`

Step-by-step explanation:

Given

`List: 8, 11, 13, 18, 25, 37`

Sample

`Progression: 8, 13, 18;`

`Rule: Add\ 5`

Required

Generate a progression with three numbers and state the rule

We will use the method of trial and error to get the solution

Start with digit 11

Add 7:

`11 + 7 = 18`

Add 7:

`11 + 7 + 7 = 18 + 7 = 25`

Hence, the progression is: 11, 18 and 25

Rule: Add 7