`xlt-1` and `x , |x+1|, |x-1|` are in AP. The sum of first twenty terms of the AP is

Suppose (1)/(2)x, lx,+1l,lx-1l,1l are in A.P., then sum to 10 terms of the A.P. is

The 1st, 8th and 22nd terms of an AP are three conscutive terms of a GP. Find the common ratio of the GP, given that the sum of the first twenty-two terms of the AP is 385.

The sum of the third and the seventh terms of an A.P. is 32 and their product is 220. Find the sum of the first twenty one terms of the A.P. (The terms of the A.P are in ascending order)

If sum of first 20 terms of an A.P. is equal to sum of first 30 terms of the A.P. then sum of the first 50 terms of the A.P. is

If the sum of first 7 terms of an A.P is 49 and that of its first 17 terms is 289, find the sum of first n terms of the A.P

If x,|x+1|,|x-1| are three terms of an A.P. then number of possible values of x is-

If x,|x+1|,|x-1| are first three terms of an A.P., then the sum of its first 20 terms is

If x,|x+1|,|x-1| are first three terms of an A.P., then the sum of its first 20 terms is

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

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.