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DS-GMATprep

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DS-GMATprep [#permalink]

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New post 25 Jul 2008, 14:06
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A
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Please can somebody expain the concept of multipliers and divisors i always get confused in thses type f questions
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Re: DS-GMATprep [#permalink]

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New post 25 Jul 2008, 14:24
apurva1985 wrote:
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Please can somebody expain the concept of multipliers and divisors i always get confused in thses type f questions


I get E.

This is not a multiple/factor problem.

The stimulus says:
of the multiples of 100 (100, 200, 300, etc.), x is closest to 500 and y is closest to 400.

This means that x rounds to 500 and y rounds to 400 (when rounding to the nearest 100).

450 < x < 550
350 < y < 450

800 < x+y < 1000

1: Insufficient
450 < x < 500
350 < y < 450

800 < x + y < 950 --> x+y rounds to either 800 or 900

2: Insufficient
450 < x < 550
350 < y < 400

800 < x + y < 950 --> x+y rounds to either 800 or 900

1 & 2 together: Insufficient
450 < x < 500
350 < y < 400

800 < x + y < 900 --> x+y still could round to either 800 or 900.

Last edited by zonk on 25 Jul 2008, 14:42, edited 1 time in total.

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Re: DS-GMATprep [#permalink]

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New post 25 Jul 2008, 14:38
This is not OA and plz can you explain what are multipliers and divisors by a few examples
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Re: DS-GMATprep [#permalink]

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New post 25 Jul 2008, 14:42
apurva1985 wrote:
This is not OA and plz can you explain what are multipliers and divisors by a few examples


Sorry, I meant I got E. Typo...Corrected.

Last edited by zonk on 25 Jul 2008, 14:44, edited 1 time in total.

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Re: DS-GMATprep [#permalink]

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New post 25 Jul 2008, 14:44
apurva1985 wrote:
This is not OA and plz can you explain what are multipliers and divisors by a few examples


Multiple questions are for example: What is the least common multiple of 9 and 16. It tests your knowledge of multiples.

Factor/divisor are for example: What is the greatest common factor of 9 and 16. It tests your knowledge of factors/divisors.

This question doesn't really test your knowledge of multiples.

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Re: DS-GMATprep [#permalink]

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New post 25 Jul 2008, 14:54
Ah gotch a million thanks to you and a spank to me for not reading the question correctly.....
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Re: DS-GMATprep [#permalink]

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New post 25 Jul 2008, 16:04
I am getting E as well:

x = 451, 499, 501, 549
y = 351, 399, 401, 449

Statement 1) X < 500

x+y = 802 (lowest), 1048 (Highest)

INSUFF



Statement 2) Y < 400

x+y = 802 (Lowest), 948 (Highest)

INSUFF



Together

X+Y = 802 (Lowest), 898 (Higest)

INSUFF

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Re: DS-GMATprep [#permalink]

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New post 25 Jul 2008, 21:56
One more vote for E
OA pleasss :)
Apurva all the best :-D do well
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Re: DS-GMATprep   [#permalink] 25 Jul 2008, 21:56
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