DS question from GMAT Prep
Q. 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.
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hundredths digit of a decimal
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shovan85
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1: 10ths digit of 10d is 7.
10d = xxx.7xx
=> d = xx.x7xx
Thus hundredths digit of d is 7 is greater than 5. Sufficient.
2: thousandths digit of d/10 is 7
d/10 = xxx.xx7xx
=> d = xxx.x7xx
Thus hundredths digit of d is 7 is greater than 5. Sufficient.
IMO
D
10d = xxx.7xx
=> d = xx.x7xx
Thus hundredths digit of d is 7 is greater than 5. Sufficient.
2: thousandths digit of d/10 is 7
d/10 = xxx.xx7xx
=> d = xxx.x7xx
Thus hundredths digit of d is 7 is greater than 5. Sufficient.
IMO
D
If the problem is Easy Respect it, if the problem is tough Attack it
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ugoyal
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Hi Shovan,shovan85 wrote:1: 10ths digit of 10d is 7.
10d = xxx.7xx
=> d = xx.x7xx
Thus hundredths digit of d is 7 is greater than 5. Sufficient.
2: thousandths digit of d/10 is 7
d/10 = xxx.xx7xx
=> d = xxx.x7xx
Thus hundredths digit of d is 7 is greater than 5. Sufficient.
IMO
D
Pls clarify this concept to me...
if the number is abce.xyz, then the tenths digit will be "c"
similarly, the thousandths digit should be "a". Let me know where I am wrong.
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shovan85
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The Question is asking for the tenths of a decimal.ugoyal wrote:Hi Shovan,shovan85 wrote:1: 10ths digit of 10d is 7.
10d = xxx.7xx
=> d = xx.x7xx
Thus hundredths digit of d is 7 is greater than 5. Sufficient.
2: thousandths digit of d/10 is 7
d/10 = xxx.xx7xx
=> d = xxx.x7xx
Thus hundredths digit of d is 7 is greater than 5. Sufficient.
IMO
D
Pls clarify this concept to me...
if the number is abce.xyz, then the tenths digit will be "c"
similarly, the thousandths digit should be "a". Let me know where I am wrong.
Let abcd.xyz be the decimal then tenths digit is x, hundredths digit is y, thousandths digit is z.
Where as d is Unit digit, c is Tens digit (Not tenths), b is Hundreds digit (Not hundredths)
If the problem is Easy Respect it, if the problem is tough Attack it
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ugoyal
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Ah...you are right mate...thanks a lot....will be watchful nowshovan85 wrote:The Question is asking for the tenths of a decimal.ugoyal wrote:Hi Shovan,shovan85 wrote:1: 10ths digit of 10d is 7.
10d = xxx.7xx
=> d = xx.x7xx
Thus hundredths digit of d is 7 is greater than 5. Sufficient.
2: thousandths digit of d/10 is 7
d/10 = xxx.xx7xx
=> d = xxx.x7xx
Thus hundredths digit of d is 7 is greater than 5. Sufficient.
IMO
D
Pls clarify this concept to me...
if the number is abce.xyz, then the tenths digit will be "c"
similarly, the thousandths digit should be "a". Let me know where I am wrong.
Let abcd.xyz be the decimal then tenths digit is x, hundredths digit is y, thousandths digit is z.
Where as d is Unit digit, c is Tens digit (Not tenths), b is Hundreds digit (Not hundredths)
the OA is D by the way
Thanks.
