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The mean proportional between (3+sqrt...

The mean proportional between `(3+sqrt(2))a n d\ (12-sqrt(32))` is `sqrt(7)` b. `2sqrt(7)` c. `sqrt(6)` d. `(15-3sqrt(2))/2`

A

`sqrt(7)`

B

`2sqrt(7)`

C

6

D

`(15-2sqrt(2))/(2)`

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The correct Answer is:
B
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