g.p.
posted by ajay .
for the what value of x the numbers x2, x,x+3 are in g.p.

when their ratios are equal. So, you need
x/(x2) = (x+3)/x
x^2 = (x+3)(x2)
x^2 = x^2+x6
x6 = 0
x = 6
4,6,9 have the common ratio 3/2
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