What is the tenths digit in the decimal representation of a certain number? (1) The number is less than 13. (2) The number is greater than 14
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 E Statements (1) and (2) together are not sufficient.
Since the number is less than , the tenths digit can be 0,1,2, or 3; Thus, statement 1 is insufficient.
Since the number is greater than , the tenths digit can be 2,3,4,...,9. Thus, statement 2 is insufficient.
From (1) and (2) taken together, the number, n, is greater than but less than . The tenths digit can be 2 or 3. Thus, statements (1) and (2) together are not sufficient.