Arithmetic Progression

The sum of the 25^th and 76^th terms of an AP is 101; the sum of the first 100 terms of the AP is

In a triangle the angle are in A.P and the lengths of the larger sides are 10 and 9 respectively then the length of the third side can be

If the p^th, q^th, r^th terms of an A.P are in G.P, then the common ratio of the G.P is

If a,b,c are in AP, then a³+c³-8b³ is equal to