Find the sum of the first 22 terms of the AP : 8,3,-2, . . . .

Find the sum of the first 22 term of the AP : 8, 3, -2 ......

Find the sum of the first 22 terms of the A.P. : 8, 3, -2,………….

Find the sum of first 24 terms of the AP 5, 8, 11, 14,…

Find the sum of first 10 terms of the A.P. 4+6+8+………

If the sum of the first 2n terms of the AP 2,5,8.....is equal to the sum of the first n terms of the AP 57,59,61, ....then n equals

Find the sum of the first 51 terms of the A.P.: whose second term is 2 and fourth term is 8.

Find the sum of the first 51 terms of the A.P.: whose second term is 2 and fourth term is 8.

Find the sum of the first 22 terms of an AP whose first term is 4 and the common difference is (4)/(3) .

The sum of the first five terms of an A.P. and the sum of the first seven terms of the same A.P. is 167. If the sum of first 10 terms of this A.P. is 235, find the sum of its first twenty terms.