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If n=4p, where p is a prime number greater than2, how many

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Manager
Joined: 07 May 2007
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If n=4p, where p is a prime number greater than2, how many [#permalink]

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24 Jun 2007, 21:21
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If n=4p, where p is a prime number greater than2, how many different positive even divisors does n have, including n?
Manager
Joined: 23 Apr 2007
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25 Jun 2007, 00:30
I go in for 3 (2,4 and n)

grad_mba I think you counted all the divisors. The Q asks only for EVEN divisors. In between, how did you get 6 as the ans?
I got 1,2,4,n and p and that is 5
Grüsse
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Joined: 08 Jun 2005
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25 Jun 2007, 12:35
Himalayan wrote:
iamba wrote:
If n=4p, where p is a prime number greater than2, how many different positive even divisors does n have, including n?

n = 4p

should be four: 2, 4, 2p, n (or 4p).

Excellent !

Manager
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29 Jun 2007, 21:33
OA is 4

great job Himalayan. Hope this method gets committed to my memory
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