If G.M. = 18 and A.M. = 27, then H.M. is [RPET 1996]

1.	If G.M. = 18 and A.M. = 27, then H.M. is [RPET 1996]
A.	\[\frac{1}{18}\]
B.	\[\frac{1}{12}\]
C.	12
D.	\[9\sqrt{6}\]
Answer» D. \[9\sqrt{6}\]

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If G.M. = 18 and A.M. = 27, then H.M. is [RPET 1996]

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