Question

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

Answer 1

Given,

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

So, now we need the 6th term from last. SO, by reversing the AP, we get;

AP = -40,-37,-31......14,17

Now, Given;

d=3

a1=-40

n=6

Therefore a6= a+(n-1)d=a6

−40+(6−1)3=a6

−40+5∗3=a6

−40+15=a6

=−25

So the 6th term is−25