Question

The first term of an A.P is 3and the common difference is -2 .find the nth term of an a.p ​

Answer 1

Step-by-step explanation:

Here, a = 5, d = 3, an = 80

Let the number of terms be n.

Then, we have:

an = a + (n − 1)d

⇒80 = 5 + (n − 1)3

⇒75 = (n − 1)3

⇒25 = (n − 1)

⇒26 = n

Thus, there are 26 terms in the given A.P.

Hope it helps you mate..