Question

How do I find the 15th term of this problem?

Answer 1

130

Explanation:

Given,

AP : 18, 26, 34, ...

To find : 15th term

15th term is t15.

AP : 18, 26, 34, ...

Here,

a = 18

d = 26 - 18 = 8

Formula : -

an = a + ( n - 1 )d

t15

= 18 + ( 15 - 1 )8

= 18 + 14 ( 8 )

= 18 + 112

= 130

Therefore, the 15th term is 130.