Question

Std 10th question send answer​

Answer 1

Here the given series (20,22,24,..)forms an a.p
with first term a= 20 and common difference d= 2. we need to find the number of seats in the 22nd row i.e. a22.

so a22= a + 21d
= 20 + 21(2)
= 20 + 42
=62
So there are 62 seats in the 22nd row..