Q. 123.7( 59 Votes )

The sum of

Answer :

Given: Sum of first three terms of a G.P. is and their product is 1

Let , a , ar be the three terms in G.P.

Given: The product of three terms = 1


⇒ a3 = 1

a = 1

Also,


10r2 - 29r + 10 = 0

10r2 - 25r - 4r + 10 = 0

5r(2r - 5) - 2(2r - 5) = 0


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