Question

15th term of an ap whose nth term is 9-5n

Answer 1

Its very easy bro!

Just do one thing in the given relation,

put n=15

9-5(15)
-66 will be the answer

Answer 2

Hi ,

nth term = an = 9 - 5n ----- ( 1 )

here n = 15

put n= 15 in equation ( 1 ) , we get 

a 15 = 9 - 5 * 15

a15 = 9 - 75

a15 = - 66

15th term of an A.P is a15 = -66

I hope this helps you.

: )