If the n^th term of the series 3 + 10 + 17 +.......... and 63 + 65 + 67 ........ are equal. Then the value of n is

k^th term of an AP is 5k + 1. Then the sum of n terms is 

If 103 is the first term of an AP and -22 is the common difference then the second term is

Value of a_{m + n} + a_{m - n} =

Which term of the A.P 21, 18, 15, ..... is 0?

n^th term of a sequence is a + nb. Find a₄ - a₃.

Two A.P.'s have the same common difference. The first term of one of these is 3, and that of the other is 8. What is the difference between their 2^nd terms?

3 - 2x, 1, 3x - 7 are three consecutive terms of an AP. Then x is

If the common difference of an A.P is d, then a₃ - a₁ equal to

The second term of an AP is (x - y) and the 5^th term is (x + y) then its first term is