A) \[\frac{63}{120}\]
B) \[\frac{63}{12}\]
C) \[\frac{126}{105}\]
D) \[\frac{120}{63}\]
Correct Answer: A
Solution :
\[{{x}_{n}}=\frac{(n+1)ab}{na+b}\] Sixth H.M. \[{{x}_{6}}=\frac{7\ .\ 3\ .\ 6/13}{\left( 6\,.\ 3+\frac{6}{13} \right)}=\frac{126}{240}=\frac{63}{120}\].
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