Question

find the first term common difference and 25th term of the AP with general term an=5+2n​

Answer 1

Answer:

The common difference of an A.P. is given by a

n+1

−a

n

∴d=a

n+1

−a

n

=3+2(n+1)−(3+2n)

=2n+2−2n

=2

Hence, the common difference d=2