Q) Find three numbers in GP whose sum is 13 and sum of their square is 91. ​

Question

Q) Find three numbers in GP whose sum is 13
and sum of their square
is 91.

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Gabriella 3 weeks 2021-08-21T21:42:09+00:00 1 Answer 0 views 0

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    2021-08-21T21:43:35+00:00

    Let the numbers be a , ar , ar2 . Now numbers are a , ar , ar2. If r = 3 and a = 1 then 1, 3 , 9 are the numbers. If r = 1/ 3 and a = 9 then 9, 3 , 1

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18:9+8+9*3-7:3-1*13 = ? ( )