Question

is
The nth term of the A.P. a, 3a, 5a,
(a) na
(b) (2n-1) a
(c) (2n + 1) a
(d) 2na
with solution​

Answer 1

Answer:

d= 3a-a

=2a

nth term of an AP is a+(n-1)d

=a+(n-1)*2a

= a+2an-2a

=a(1+2n-2)

=a(2n-2+1)

=a(2n-1)

So your answer is option b.

Hope this helps!!!