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gmat Q2

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Senior Manager
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gmat Q2 [#permalink]

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New post 20 Jun 2009, 03:32
00:00
A
B
C
D
E

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please help.
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Re: gmat Q2 [#permalink]

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New post 20 Jun 2009, 04:49
repeated

already answered

try to give file name like GPREP2-Q no 29.jpg
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Re: gmat Q2 [#permalink]

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New post 20 Jun 2009, 06:56
Why is the answer C ??

the number when rounded to neared thousand is .455
means the number can be 0.4549 or 0.4551
i.e

0.4545
0.4546
0.4547
0.4548
0.4549
0.4550
0.4551
0.4552
0.4553
0.4554

in all the cases teh number rounded to hundred will be 0.46 only rite..

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Re: gmat Q2 [#permalink]

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New post 20 Jun 2009, 13:04
agree with Neochronic

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Re: gmat Q2 [#permalink]

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New post 21 Jun 2009, 01:23
Correction -
0.4545 = .45 when rounded to hundreths.
0.4546 = .45 when rounded to hundreths.
0.4547 = .45 when rounded to hundreths.
0.4548 = .45 when rounded to hundreths.
0.4549 = .45 when rounded to hundreths.
0.4550 = .46 when rounded to hundreths.
0.4551 = .46 when rounded to hundreths.
0.4552 = .46 when rounded to hundreths.
0.4553 = .46 when rounded to hundreths.
0.4554 = .46 when rounded to hundreths.
So we need both the stmts. Hope it helps.

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Re: gmat Q2 [#permalink]

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New post 21 Jun 2009, 01:27
Anyone for explanation..
nitya34 ??

i am looking for understanding the 'rounding' concept better..

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Re: gmat Q2 [#permalink]

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New post 21 Jun 2009, 01:29
mdfrahim wrote:
Correction -
0.4545 = .45 when rounded to hundreths.
0.4546 = .45 when rounded to hundreths.
0.4547 = .45 when rounded to hundreths.
0.4548 = .45 when rounded to hundreths.
0.4549 = .45 when rounded to hundreths.
0.4550 = .46 when rounded to hundreths.
0.4551 = .46 when rounded to hundreths.
0.4552 = .46 when rounded to hundreths.
0.4553 = .46 when rounded to hundreths.
0.4554 = .46 when rounded to hundreths.
So we need both the stmts. Hope it helps.


Yeah i see that 0.4545 becomes 0.45 when rounded to hundredths.. but why ?/

0.4545 first becomes 0.455 and then becomes 0.46...

when rounding to hundredths, dont you round first to thousands as it is availalble and then round it to hundredths.. or you only consider the thousands digit when rounding to hundredths.. ?

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Re: gmat Q2 [#permalink]

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New post 24 Jun 2009, 03:36
From statement 1, the answer could either be 0.4551 or 0.4549 (i.e. thousandth no. is either 4 or 5)

taken together with statement 2, you know the thousandth no. is 5 so when you round 0.4551 to the hundreth no. it become 0.46

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Re: gmat Q2 [#permalink]

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New post 24 Jun 2009, 14:15
Neochronic,

you can only round once, and not recursively as you pointed out. Otherwise the result of 0.4545 will be 0.5 and not 0.455. In this case (C) is the right answer since (A) leaves you to choose between 4 or 5 for the thousandths, and (B) narrows that down to only 5.

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Re: gmat Q2   [#permalink] 24 Jun 2009, 14:15
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