Question

which term of the AP 21,18,15........is 0

Answer 1

8 is ur answer.......

Answer 2

Hey!!!...Here is ur answer

21,18,15,.....

a=21 and d= -3

0=a+(n-1)d

0=21+(n-1)(-3)

0=21-3n+3

3n=24

n=8

so the 8th term is 0

Hope it will help you