Question

21. Find the 6th term from the end of the AP 17, 14, 11, ..., (-40). ​

Answer 1

Answer:

Given

AP...17,14,11.....-40

so,now we need 6th term from last.

so reversing the AP, we get

AP=-40,-37,-36.....14,17

Now given

d=3

D1=-40

n=6

Therefore A6=a+(n-1)d

A6=-40+(6-1)3

A6=-40+(5)3

A6=-40+15

A6=-25