A) 256
B) 512
C) 1024
D) None of these
Correct Answer: B
Solution :
Let the 9 terms of a G.P. is \[\frac{a}{{{r}^{4}}},\frac{a}{{{r}^{3}}},\frac{a}{{{r}^{2}}},\frac{a}{r},a,\]\[ar,a{{r}^{2}},a{{r}^{3}},a{{r}^{4}}\]. Given, fifth term \[a=2\] Hence product of 9 terms is\[{{a}^{9}}={{(2)}^{9}}=512\].
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