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hundredths digit of a decimal

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Source: — Data Sufficiency |
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by shovan85 » Sun Oct 31, 2010 10:14 am
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
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by ugoyal » Sun Oct 31, 2010 10:42 am
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
Hi Shovan,

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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by shovan85 » Sun Oct 31, 2010 10:53 am
ugoyal wrote:
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
Hi Shovan,

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.
The Question is asking for the tenths of a decimal.

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)
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by ugoyal » Sun Oct 31, 2010 11:18 am
shovan85 wrote:
ugoyal wrote:
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
Hi Shovan,

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.
The Question is asking for the tenths of a decimal.

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)
Ah...you are right mate...thanks a lot....will be watchful now :)

the OA is D by the way

Thanks.
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