Question

11. Which term of the A.P. 76, 72, 68 is 0 ?​

Answer 1

Answer:

Solution

AP is 72,68,64,60,....

Let nth the term is 0

Here,

First term =a=72

Common difference =d=68−72=-4

an =a+(n−1)d

0=72+(n−1)(−4)

−72=−4(n−1)

n−1=18

n=18+1=19

Therefore, 0 is the 19 th trm