If the sum of 12th and 22nd terms of an AP is 100 then the sum of the first 33 terms of an AP is

If the sum of 12 th and 22nd terms of an AP is 100 then the sum of the first 33 terms of the AP is

If the sum of 12^(th) and 22^(nd) terms of an A.P is 100, then the sum of the first 33 terms of the A.P is

if the sum of 12^th and 22^th terms of an AP is 100. Find the sum of first 33 terms.

7th term of an A.P. is 40. then the sum of the first 13 terms is

If the sum of the first four terms of an AP is 40 and the sum of the first fourteen terms of an AP is 280. Find the sum of first n terms of the A.P.

7^(th) term of an A.P. is 40. Then, the sum of first 13 terms is

The 5^(th) term of an AP is 50. Find the sum of first 9 terms.

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

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