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Set 15 Q 26

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by [email protected] » Sun Sep 23, 2007 1:44 pm
In the decimal representation of x, where 0 < x < 1, is the tenths digit if x nonzero?
(1) 16x is an integer.
(2) 8x is an integer.
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is
sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.

Can anyone clear my confusion.
If i say that x = .895. what is my tenth digit here.
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Source: — Problem Solving |

by raulverde » Sun Sep 23, 2007 2:28 pm
The tenth digit is "8".
Even i was stumped by it when i saw this the first time. To the right of a decimal , the first digit is "tenths"
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by [email protected] » Sun Sep 23, 2007 3:44 pm
So you mean no unit digits after decimal?
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by raulverde » Sun Sep 23, 2007 3:57 pm
no senor[/list]
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by cindyqtran » Sun Sep 23, 2007 3:57 pm
is the answer D?

A. 16x where x can be: 1/2, 1/4, 1/8 (SUFF. .5, .25, .125)
B. 8x where x can be 1/2, 1/4 (SUFF. .5, .25...)
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by karthick451 » Sun Sep 23, 2007 4:09 pm
the answer is B

1/16 has 0 as tenth digit...but 2/16 does not...

but

1 to 7 /8 all have tenth digit as non zero.
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by cindyqtran » Sun Sep 23, 2007 6:21 pm
ah, i read the question stem incorrectly.
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