If the A.M between two positive numbers ...

If the A.M between two positive numbers a and b is twice theirr G.M., then A : B =

A

a) `2 +- sqrt(3) : 2 overset(-)(+) sqrt(3)`

B

b) `3 +- sqrt(2) : 3 overset(-)(+) sqrt(2)`

C

c) `4 +- sqrt(3) : 4 overset(-)(+) sqrt(3)`

D

d) `5 +- sqrt(2) : 5 overset(-)(+)- sqrt(2)`

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