Find the sum of first five terms of the G.P 5,15,45…..

Find the sum of first five terms of the G.P. 1,2,4, ….

The second term of a G.P.is 3 and fifth term is (81)/(8) find the eighth term.Find the sum of first 15 terms of the G.P.1,2,4,8,.......

What is the sum of first 10 terms of the A.P. 15, 10 ,5 ….?

The sum of the first ten terms of the A.P. 15,10,5,….is……

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.

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 oif the first ten terms of an A.P. is equal to 155, and the sum of the first two terms of a G.P. is 9. Find these progressionsif the first term of the A.P. equals the common ratio of the G.P. and the 1st term of G.P. equals the common difference of A.P.