Question

I the common difference of the a p is 5 then find a18 _a 13

Answer 1

Hola..!!

Let a = first term
and d = common difference
= 5

.° . a18 - a13
= a + 17d - (a + 12d)
= a + 17d - a - 12d
= 5d
= 5 × 5
= 25

Hope it'll help....:)

Answer 2

I think the answer is 25