Q12 of 202 Page 10

The first term of an A.P. is p and its common difference is q. Find its 10th term. [CBSE 2008]

The first term of A.P is p

Common difference = q

a_n = p + (n–1)q

a₁₀= p + 9q

1f the sum of n terms of an A.P. is S_n = 3n² + 5n. Write its common difference.

Write the expression for the common difference of an A.P. whose first term is a and nth term is b.

For what values of p are 2p + 1, 13, 5p – 3 are three consecutive terms of an A.P.?

If , a, 2 are three consecutive terms of an A.P., then find the value of a.