A) \[n>5\]
B) \[n\ge 5\]
C) \[n<5\]
D) \[n>8\]
Correct Answer: B
Solution :
Let\[P(n):{{10}^{n-2}}\ge 81n\] For\[n=4\], \[{{10}^{2}}81\times 4\] For\[n=5\], \[{{10}^{3}}81\times 5\] Hence, by mathematical induction for\[n\ge 5\], the proposition is true.
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