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21 Sep 2010, 13:49
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B
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Difficulty:
35%
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Question Stats:
65% (01:18) correct
35%
(01:32)
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What is the hundredths digit of the decimal m ?
(1) The tenths digit of 100m is 5.
(2) The tens digit of 1,000m is 5.
(1) The tenths digit of 100m is 5.
(2) The tens digit of 1,000m is 5.
22 Sep 2010, 00:06
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tatane90
What is the hundreths digit of the decimal m ?
(1) The tenths digit of 100m is 5.
(2) The tens digit of 1,000m is 5.
I am not easy with this one.
(1) The tenths digit of 100m is 5.
(2) The tens digit of 1,000m is 5.
I am not easy with this one.
What is the hundredths digit of the decimal m?
Let's say \(m=a.bcd\). Hundredths digit would be the value of \(c\). So the question is: \(c=?\)
(1) The tenths digit is 100m is 5 --> \(100m=100*a.bcd=abc.d\) --> tenths digit of \(100z\) is the value of \(d\). So \(d=5\). Not sufficient to calculate \(c\).
(2) The tens digit of 1,000m is 5 --> \(1000m=1000*a.bcd=abcd\) --> tens digit of \(1000m\) is the value of \(c\). So \(c=5\). Sufficient.
Answer: B.
Note: 1234.567
1 - THOUSANDS
2 - HUNDREDS
3 - TENS
4 - UNITS
. - decimal point
5 - TENTHS
6 - HUNDREDTHS
7 - THOUSANDTHS
Hope it helps.
General Discussion
21 Sep 2010, 15:15
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B.
What is the hundreths digit of the decimal m ?
(1) The tenths digit of 100m is 5.
(2) The tens digit of 1,000m is 5.
To solve this lets randomly say that m = .05.
(1) 100 (.05) = 5.00 => 0 does not equal 5 (which is our hundreths digit) so A is insufficient
(2) 1000 (.05) = 50.00 since the 5 is in the tens digits and 5 = 5 we have a winner.
B is sufficient.
What is the hundreths digit of the decimal m ?
(1) The tenths digit of 100m is 5.
(2) The tens digit of 1,000m is 5.
To solve this lets randomly say that m = .05.
(1) 100 (.05) = 5.00 => 0 does not equal 5 (which is our hundreths digit) so A is insufficient
(2) 1000 (.05) = 50.00 since the 5 is in the tens digits and 5 = 5 we have a winner.
B is sufficient.
