Question

which term of AP is -18,-20,22........ is zero​

Answer 1

Answer:

an=0

a= -18

d=(-20)-(-18) = -20+18

d=-2

an=a+(n-1)d

0=(-18)+(n-1)(-2)

18=2-2n

16=(-2n)

n=(-8)

Pls check your question again

There is some mistake in your question.....

because n can not be negative....