Question

Which term of the AP 72, 63, 54, …. is 0 ? (a) 8th (b) 9th (c) 10th (d) 11th

Answer 1

$a = 72$
$d = 63 - 72 = -9$

$a + ( n - 1 ) d = 0$
$72 + ( n - 1 ) -9 = 0$
$72 - 9n + 9 = 0$
$81 - 9n = 0$
$- n = - 81 / 9$
$n = 9$

》option b is correct answer !!

B → 9th term



[tex]BE BRAINLY [tex]

Answer 2

HEY BUDDY HERE IS UR ANSWER !!!

a=72
d=63 - 72= - 9
AN= a + (n-1) d = 0
72 + (n-1) -9 = 0
72 -9n + 9 = 0
81 - 9n = 0
n = 9

Option b is correct

》》 BE BRAINLY 《《