Question

a. If the 5th & 11th terms of an A.P. are 16 & 34 respectively. Find the A.P.​

Answer 1

Answer:

Let there be an A.P with first term a, common difference d. If a

n

denotes its nth term and S

n

the sum of first n terms, find

a, if a

n

=28, S

n

=144 and n=9