1.

If k,2k+2,3k+3,......are G.P then find common ratio of G.P

Answer»

Its easy see

2k+2/k = 3k+3/2k+2. as it is a gp

so

2k+2×2k+2 = 3k^2 + 3k

4k^2 + 8K + 4 = 3k^2 + 3k

k^2 + 5K +4 =0

so k= -1 or -4

so ratio is easy to find keep values of k and take any TWO consecutive terms in ratio


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