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# I am totally foxed by this one. Any suggestions are welcome

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Intern
Joined: 30 Apr 2004
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Location: Los Angeles, CA
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I am totally foxed by this one. Any suggestions are welcome [#permalink]  21 Nov 2005, 19:41
I am totally foxed by this one. Any suggestions are welcome

For every positive integer n, h(n) is defined to be the product of all the even integers from 2 to n inclusive. If p is the smallest prime factor of h(100) + 1, then p is

a. between 2 and 10
b. between 10 and 20
c. between 20 and 30
d. between 30 and 40
e. greater than 40
Director
Joined: 21 Aug 2005
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[#permalink]  21 Nov 2005, 19:44
h(100)+1 = (2.4.6...100)+1 = 2(1.2.3...50)+1
All prime factors less than 50 will yield a remainder of 1. So nothing less than 50 is a factor of this. Hence E.
VP
Joined: 06 Jun 2004
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[#permalink]  21 Nov 2005, 20:51
Nice working GSR, E it is.
Intern
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[#permalink]  21 Nov 2005, 21:42
Thanks for the quick reply gsr
SVP
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[#permalink]  22 Nov 2005, 05:24
got greater than 50 as well.
_________________

hey ya......

Director
Joined: 14 Sep 2005
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Location: South Korea
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[#permalink]  22 Nov 2005, 06:52
Well, the question is killing me...

I did MS Excel, and I got a result which is not (E).....

What's wrong with me...
_________________

Auge um Auge, Zahn um Zahn !

SVP
Joined: 05 Apr 2005
Posts: 1731
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Kudos [?]: 39 [0], given: 0

[#permalink]  22 Nov 2005, 22:01
gamjatang wrote:
Well, the question is killing me...
I did MS Excel, and I got a result which is not (E).....
What's wrong with me...

assume computer in gmat as "beauty", which you can see/feel, but cannot touch/use.
Director
Joined: 21 Aug 2005
Posts: 793
Followers: 2

Kudos [?]: 10 [0], given: 0

[#permalink]  22 Nov 2005, 22:16
HIMALAYA wrote:
gamjatang wrote:
Well, the question is killing me...
I did MS Excel, and I got a result which is not (E).....
What's wrong with me...

assume computer in gmat as "beauty", which you can see/feel, but cannot touch/use.

Himalaya!! When did you turn in to a 'beautiful' woman ?
SVP
Joined: 05 Apr 2005
Posts: 1731
Followers: 5

Kudos [?]: 39 [0], given: 0

[#permalink]  23 Nov 2005, 07:22
gsr wrote:
HIMALAYA wrote:
gamjatang wrote:
Well, the question is killing me...
I did MS Excel, and I got a result which is not (E).....
What's wrong with me...

assume computer in gmat as "beauty", which you can see/feel, but cannot touch/use.

Himalaya!! When did you turn in to a 'beautiful' woman ?

since i born.
[#permalink] 23 Nov 2005, 07:22
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# I am totally foxed by this one. Any suggestions are welcome

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