Aptitude Question ID : 93627

The mean proportional between (3+\sqrt{2}) and (12-\sqrt{32}) is:
[A]6
[B]\sqrt{7}
[C]2\sqrt{7}
[D]\frac{15-3\sqrt{2}}{2}

\mathbf{2\sqrt{7}}
Mean Proportional =
=> \sqrt{(3+\sqrt{2})(12-\sqrt{32})}
=> \sqrt{(3+\sqrt{2})4(3-\sqrt{2})}
=> 2\sqrt{9-2} = 2\sqrt{7}
Hence option [C] is the right answer.

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