A) 36
B) 24
C) 18
D) 9
Correct Answer: C
Solution :
Let two numbers are a and b. \[\therefore \] \[AM=\frac{a+b}{2}=27\] \[\Rightarrow \] \[a+b=54\] ?.(i) and \[HM=\frac{2ab}{a+b}=12\] \[\Rightarrow \] \[2ab=12(a+b)\] \[\Rightarrow \] \[ab=6\times 54\] \[\Rightarrow \] \[ab=324\] \[\therefore \] \[GM=\sqrt{ab}=\sqrt{324}=18\]You need to login to perform this action.
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