The mean - proportional of 16 and 25 isA. 400B. 100C. 20D. 40 – InterviewSolution

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1.	The mean - proportional of 16 and 25 isA. 400B. 100C. 20D. 40
Answer» Correct Answer - C Let the mean - proportional = x. ` :. ` 16, x and 25 are in continued proportion. ` :. 16/x = x/(25) " or, " x^(2) = 400 " o, " x = sqrt(400) = 20`. `:. ` (c ) is correct.

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