Question

Which term of the AP, 72, 63,54, ........is zero
?​

Answer 1

Given A.P : 72 , 63 , 54 , ...

Tn = 0

n = ?

Solution :

a = 72

d = - 9

We know that ,

Tn = a + ( n - 1 )d

0 = 72 + ( n - 1 )( -9 )

- 9n + 9 + 72 = 0

9n = 81

n = 9

So 9th term of given AP will be zero.

Answer 2

$\mathfrak{\huge \underline{Question:}}$

Which term of the AP, 72, 63,54, ........is zero

?

$\mathfrak{\huge \underline{Answer :}}$

First term= 72

Common difference = - 9

By,formula