Explanation
In this question, we need to know the tenths digit of a
number--that is, the digit that comes immediately to the right of the decimal
point. Let's examine the data statements, separately first.
Statement (1) tells us, in the language of decimals, that
this number is less than 0.625. You could do this decimal conversion by
memorizing it, doing long division, or thinking of an eighth as a half of a
quarter. Anyway, if this number is less than 0.625, than the tenths digit could
be 5, 4, or so on. Insufficient.
Statement (2) has a similar problem. The number is greater
than
, that is, point 5 repeating. That means the tenth
digit could be 6, say, or it could be 7. Different possible cases yield
different answers, so we don't have sufficient information to answer the
question.
Combining the statements, we can apply the takeaways from
them together. The number is greater than
but less than
0.625. It could be, to take one case, 0.57. But it could also be 0.61. So there
are still different possible answers for different cases. We don't have
sufficient information.
The correct answer is (E).
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