A) \[1:9\]
B) \[5:3\]
C) \[3:5\]
D) \[2:5\]
Correct Answer: B
Solution :
Given that \[\frac{a}{b}=\frac{9}{1}\] or \[a=9b\] Here \[H=\frac{2ab}{a+b}\] and \[G=\sqrt{ab}\] \[\Rightarrow \] \[H:G=\frac{2ab}{a+b}:\sqrt{ab}=\frac{2.9{{b}^{2}}}{10b}:3b=\frac{3}{5}\] Hence \[G:H=5:3\]
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