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dsuna
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 Posted: Sat Mar 24, 2007 12:01 pm Post subject: GMAT Prep question - please explain |
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Is the hundredths digit of the decimal d greater than 5?
1. The tenths digit of 10d is 7
2. The thousandths digit of d/10 is 7
Ans. D
Please confirm if my logic is right.
Let's say the number is abc.Xde
They are asking if X>5
1. 10d = 10*abc.Xde = abcX.de - where d=7 - nothing about X
2. d/10 = abc.Xde/10 = ab,cXde - where c=7 - again nothing about X
The answer is D - each statement Alone is sufficient, because you answer NO to each statement? I mean NO, 7 is not the tenths digit and No, 7 is not the thousandths? |
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jayhawk2001
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| Posted: Sat Mar 24, 2007 1:49 pm Post subject: |
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The hundredths place is the second digit following the decimal point.
So, in your abc.Xde example, X is tenths place and d is hundredths
place
1 and 2 both give you 7 for the hundredths place. Hence D |
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