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Question

If n is a positive integer, is (110)n<0.01?
(1) n>2
(2) (110)nāˆ’1<0.1

A
Statement (1) alone is sufficient, but statement (2) alone is not sufficient.
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B
Statement (2) alone is sufficient, but statement (1) alone is not sufficient.
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C
Both statements together are sufficient, but neither statement alone is sufficient.
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D
Each statement alone is sufficient.
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E
Statements (1) and (2) together are not sufficient.
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Solution

The correct option is D Each statement alone is sufficient.
We will express both sides as power of 10 to simplify the question.
LHS:
(0.1)n 10n
RHS:
0.01 102
n>2
1st is sufficient.
101n<101
n>2
This is also sufficient.
Hence, Option D is correct.


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