Question

If a = 2 and d = 4, then T20​

Answer 1

Answer:

Given:

a=2 ; d=4

T20 means 20th term:

use the formula of nth term of A.P. ,that is

T20 = a+ (n-1)d

       = 2+ (20-1)4

       = 2+ 19*4

       =2+76=78

So, T20 is 78.