Question

which term of the A. P 100,90,80,......is zero?

Answer 1

hope this helps u.....

Answer 2

here first term,a=100 d=-10

let n th term be 0

=a+(n-1)d=0

=100+(n-1)(-10)=0

=n-1=(-100/-10)

=n-1=10

n=11

So,11th term is 0