Question

which term of AP 72,63,54 ....is 0

Answer 1

a=72 d=-9
0=72+(n-1)d
=72+(n-1)-9
-72÷-9=n-1
8=n -1
n=9
plz mark as brialianist

Answer 2

hello Frnd

here is your answer

Given that

72, 63, 54 ...

here
a = 72
d= - 9
$a_{n} = 0$
As we know that
$a_{n} = a + (n - 1)d \\ 0 = 72 + (n - 1)( - 9) \\ 0 = 72 - 9n + 9 \\ 0 = 81 - 9n \\ 9n = 81 \\ n = 9$
Hence 9th term of AP will be 0


hope it helps
jerri