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The product of the three numbers in G.P. is 125 and sum of theirproduct taken in pairs is `(175)/2`. Find them. |
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Answer» Correct Answer - 5/2, 5,11 Let three terms in G.P. be a/r,a,ar. Given that the product is 125. `therefore` a=5 Also, `a^(2)(rxx1+1xx1/r+rxx1/r)=175/2` or `25(r^(2)+r+1)=175/2r` or `2(r^(2)+r+1)=7r` or `2r^(2)-5r+2=0` or `(r-2)(2r-1)=0` or `r=2,1/2` Hence, the numbers are 10,5,5/2 or 5/2,5,10. |
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