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If digit h is the hundredths digit in the decimal d=0.2h6,

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If digit h is the hundredths digit in the decimal d=0.2h6, [#permalink] New post 21 Jul 2006, 00:57
If digit h is the hundredths’ digit in the decimal d=0.2h6, what is the value of d, rounded to the nearest tenth?

(1) d < 1/4

(2) h < 5
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 [#permalink] New post 21 Jul 2006, 02:00
E.

1) d < 0.25
D can be 0.246 in that case rounded d would be 0.3
D can be 0.23 in the case rounded d would be 0.2
Not suff

2) h <5

then d can be 0.246, rounded d = 0.3
D can be 0.236, rounded d = 0.2

Not suff
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 [#permalink] New post 21 Jul 2006, 13:23
jaynayak wrote:
E.

1) d < 0.25
D can be 0.246 in that case rounded d would be 0.3
D can be 0.23 in the case rounded d would be 0.2
Not suff

2) h <5

then d can be 0.246, rounded d = 0.3
D can be 0.236, rounded d = 0.2

Not suff


I think it is D. How can 0.246 ~0.3 (anything >= 0.25XXX will be 0.3)
Similarly if h is < 5 then even if it is 0.246 it should be 0.2

Please correct me! I may be totally wrong here
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 [#permalink] New post 21 Jul 2006, 13:42
Should be D.

St1: d < 0.25 i.e h must be less than 5. So d will be 0.2: SUFF

St2: same as above. h<5 so d = 0.2: SUFF
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 [#permalink] New post 24 Jul 2006, 05:22
ps_dahiya wrote:
Should be D.

St1: d < 0.25 i.e h must be less than 5. So d will be 0.2: SUFF


Shouldn't h be < 4... If it is 0.246 --> 0.25 --> 0.3
But if it is 0.236 --> 0.24 --> 0.2

ps_dahiya wrote:
St2: same as above. h<5 so d = 0.2: SUFF


Same here.....
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 [#permalink] New post 24 Jul 2006, 07:03
sumitsarkar82 wrote:
St1: d < 0.25 i.e h must be less than 5. So d will be 0.2: SUFF


Shouldn't h be < 4... If it is 0.246 --> 0.25 --> 0.3
But if it is 0.236 --> 0.24 --> 0.2

[/quote]
0.246 --> 0.25 --> 0.3 IS WRONG
0.246 --> 0.2 IS CORRECT

Rounding is not done right to left but its done left to right.

Taking this example: Round off 0.246 to nearest tenth

1. Look at the 100th digit.
a. If it is less than 5 then drop all other digits right to 10th digit and don't increase the tenth digit.
b. If it is greater than 5 then drop all other digits right to 10th digit and don't increase the tenth digit.
c. If it is equal to 5 then look the next digit right to 10th digit and again apply the same rules as in point a and b above.
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 [#permalink] New post 24 Jul 2006, 07:23
ps_dahiya wrote:
sumitsarkar82 wrote:
St1: d < 0.25 i.e h must be less than 5. So d will be 0.2: SUFF


Shouldn't h be < 4... If it is 0.246 --> 0.25 --> 0.3
But if it is 0.236 --> 0.24 --> 0.2


0.246 --> 0.25 --> 0.3 IS WRONG
0.246 --> 0.2 IS CORRECT

Rounding is not done right to left but its done left to right.

Taking this example: Round off 0.246 to nearest tenth

1. Look at the 100th digit.
a. If it is less than 5 then drop all other digits right to 10th digit and don't increase the tenth digit.
b. If it is greater than 5 then drop all other digits right to 10th digit and don't increase the tenth digit.
c. If it is equal to 5 then look the next digit right to 10th digit and again apply the same rules as in point a and b above.[/quote]

A and B here are same irrespective of <5 or >5... is that a typo

Do you have a link for rounding off...
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 [#permalink] New post 24 Jul 2006, 11:25
sumitsarkar82 wrote:
ps_dahiya wrote:
sumitsarkar82 wrote:
St1: d < 0.25 i.e h must be less than 5. So d will be 0.2: SUFF


Shouldn't h be < 4... If it is 0.246 --> 0.25 --> 0.3
But if it is 0.236 --> 0.24 --> 0.2


0.246 --> 0.25 --> 0.3 IS WRONG
0.246 --> 0.2 IS CORRECT

Rounding is not done right to left but its done left to right.

Taking this example: Round off 0.246 to nearest tenth

1. Look at the 100th digit.
a. If it is less than 5 then drop all other digits right to 10th digit and don't increase the tenth digit.
b. If it is greater than 5 then drop all other digits right to 10th digit and don't increase the tenth digit.
c. If it is equal to 5 then look the next digit right to 10th digit and again apply the same rules as in point a and b above.


A and B here are same irrespective of <5 or >5... is that a typo

Do you have a link for rounding off...[/quote]

Here is one of the links:

http://academic.brooklyn.cuny.edu/geolo ... ndoff.html
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 [#permalink] New post 24 Jul 2006, 17:21
Answer: D

Note that when rounding you look at the immediate next digit from the *left* to the right, not from the *right* to left. ( from MGMAT)

Therefore, when you round, you ignore the digit 6 in 0.2h6 in this case.

S1: d < 1/4
i.e. rounded(0.2h6) < 0.25

h is < 5

Sufficient.

S2: Provides the same information.

Sufficient.

Answer: D

which means
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 [#permalink] New post 24 Jul 2006, 22:11
ps_dahiya gr8 job!
my first choice was E.
I missed the rounded to the nearest tenth part of the question)silly mistake
D it is
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 [#permalink] New post 05 Aug 2006, 19:36
answer is D
d<.25 basically means that h<5,
if h=5 then d = .256 > .25

Also, b) states exactly the same thing, h=5
So, in both cases d=.2

I missed the tenths too.
  [#permalink] 05 Aug 2006, 19:36
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