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# A, B, C, D, E, F, G, and H are all integers, listed in order

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Manager
Joined: 28 Aug 2008
Posts: 94
A, B, C, D, E, F, G, and H are all integers, listed in order  [#permalink]

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23 Sep 2008, 08:47
1
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Difficulty:

(N/A)

Question Stats:

80% (00:58) correct 20% (00:00) wrong based on 37 sessions

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A, B, C, D, E, F, G, and H are all integers, listed in order of increasing size. When these numbers are arranged on a number line, the distance between any two consecutive numbers is constant. If G and H are equal to 512 and 513, respectively, what is the value of A?

-24(512)

-23(512)

-24(56)

23(512)

24(512)

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SVP
Joined: 07 Nov 2007
Posts: 1728
Location: New York
Re: PS - Number Line/ Number Props  [#permalink]

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23 Sep 2008, 09:35
1
IgnitedMind wrote:
A, B, C, D, E, F, G, and H are all integers, listed in order of increasing size. When these numbers are arranged on a number line, the distance between any two consecutive numbers is constant. If G and H are equal to 512 and 513, respectively, what is the value of A?

-24(512)

-23(512)

-24(56)

23(512)

24(512)

Looks like there is some problem with question..

If question was correct, answer would be 506 which is not the option.
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Manager
Joined: 28 Aug 2008
Posts: 94
Re: PS - Number Line/ Number Props  [#permalink]

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23 Sep 2008, 09:41
Suresh, I pulled this straight from MGAMT prep... here is a screen:

Manager
Joined: 28 Aug 2008
Posts: 94
Re: PS - Number Line/ Number Props  [#permalink]

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23 Sep 2008, 09:43
P.S .... The OA and explanation confuse me and I'm looking for help, will follow up with MGMAT's explanation after some discussion
SVP
Joined: 07 Nov 2007
Posts: 1728
Location: New York
Re: PS - Number Line/ Number Props  [#permalink]

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23 Sep 2008, 09:47
2
3
IgnitedMind wrote:
Suresh, I pulled this straight from MGAMT prep... here is a screen:

Now it make sense..

difference between G AND H = 5^13 - 5^12 = 4*5^12

value of A = 5^13- 7*difference = 5^13-7* 4*5^12
= 5^12(5-28)= -23*5^12

B
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Senior Manager
Joined: 18 Jun 2007
Posts: 272
Re: PS - Number Line/ Number Props  [#permalink]

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23 Sep 2008, 12:43
agree with suresh....
though I derived the answer from the value of G
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Joined: 09 Sep 2013
Posts: 7774
Re: A, B, C, D, E, F, G, and H are all integers, listed in order  [#permalink]

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14 Oct 2017, 10:13
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Re: A, B, C, D, E, F, G, and H are all integers, listed in order &nbs [#permalink] 14 Oct 2017, 10:13
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# A, B, C, D, E, F, G, and H are all integers, listed in order

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