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Is the hundreths digit of the decimal D greater than 5? The

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Is the hundreths digit of the decimal D greater than 5? The [#permalink] New post 08 Nov 2008, 03:37
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Is the hundreths digit of the decimal D greater than 5?

The tenths digit of 10D is 7
The thousandths digit of D/10 is 7

Last edited by study on 09 Nov 2008, 08:43, edited 1 time in total.
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Re: Decimals [#permalink] New post 08 Nov 2008, 04:08
Is the hundreths digit of the decimal D greater than 5?

The tenths digit of D is 7, ---> tenths has nothing to do with hundreths, not suff
The thousandths digit of D/10 is 7, ---> the thousandths digit of D/10, is the hundreths digit of D, suff

B
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Re: Decimals [#permalink] New post 08 Nov 2008, 11:05
B.

If D/10 has thousandths digit as 7. D will have the same digit as hundredths digit, which is 7

greater than 5
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Re: Decimals [#permalink] New post 08 Nov 2008, 11:55
Any takers? B is not the correct answer.
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Re: Decimals [#permalink] New post 08 Nov 2008, 12:17
E.

If MNOPQR is a six digit integer, then MNOPQR/10 = MNOPQ.R
After dividing by 10, 10's digit becomes unit's, 100's digit become 10's so no.

So there is no way from given info to know about 100ths digit.
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Re: Decimals [#permalink] New post 08 Nov 2008, 17:58
mbajingle wrote:
E.

If MNOPQR is a six digit integer, then MNOPQR/10 = MNOPQ.R
After dividing by 10, 10's digit becomes unit's, 100's digit become 10's so no.

So there is no way from given info to know about 100ths digit.



Why are looking for a integer? the Q already says that it is a decimal.

What is the OA?
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Re: Decimals [#permalink] New post 08 Nov 2008, 18:05
E.

They never said they were talking about numbers after the decimal. They might be asking about the numbers before or after decimal.
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Re: Decimals [#permalink] New post 09 Nov 2008, 00:49
icandy wrote:
mbajingle wrote:
E.

If MNOPQR is a six digit integer, then MNOPQR/10 = MNOPQ.R
After dividing by 10, 10's digit becomes unit's, 100's digit become 10's so no.

So there is no way from given info to know about 100ths digit.



Why are looking for a integer? the Q already says that it is a decimal.

What is the OA?

I think the question asked is about 10's digit and 100's digit which are part of integer part of the number, even if the number contain non.zero value after decimal point.

But if by hundredth digit they mean the position of x in 0.0x, then B should the answer.
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Re: Decimals [#permalink] New post 09 Nov 2008, 04:51
This was a bit tough and confusing. FYI this qs is from the GMAT Prep:

The qs stem sates D is a decimal.

the first statement says that in 10d the tenth digit is 7 .. so 10*d = 10*a.bcde = ab.cde .. so in this number the tenth digit is c which is given to be 7 .. which is > 5 .. so is sufficient ...

the second statement says that the thousands digit is of d/10 is 7 ... now d/10 = a.bcde/10 = 0.abcde .. in this number the thousands digit is c .. which is given to be 7 .. which is again > 5 ... so 2nd statement is sufficient ..

Does it help...
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Re: Decimals [#permalink] New post 09 Nov 2008, 05:13
study wrote:
This was a bit tough and confusing. FYI this qs is from the GMAT Prep:

The qs stem sates D is a decimal.

the first statement says that in 10d the tenth digit is 7 .. so 10*d = 10*a.bcde = ab.cde .. so in this number the tenth digit is c which is given to be 7 .. which is > 5 .. so is sufficient ...

the second statement says that the thousands digit is of d/10 is 7 ... now d/10 = a.bcde/10 = 0.abcde .. in this number the thousands digit is c .. which is given to be 7 .. which is again > 5 ... so 2nd statement is sufficient ..

Does it help...


So the question you quoted is incorrect? Should be The tenths digit of 10D is 7
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Re: Decimals [#permalink] New post 09 Nov 2008, 08:45
lylya, you corect - I have corrected the typo
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Re: Decimals [#permalink] New post 09 Nov 2008, 12:32
study wrote:
Is the hundreths digit of the decimal D greater than 5?

The tenths digit of 10D is 7
The thousandths digit of D/10 is 7


1: 10D = 0.7xxxx
D = 0.x7xxx
so 7 > 5. suff.

2: D/10 = 0.xx7xxx
D = 0.x7xxx

suff....

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Re: Decimals   [#permalink] 09 Nov 2008, 12:32
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