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Divisor/Prime Number Question

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Junior | Next Rank: 30 Posts
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Divisor/Prime Number Question

by lpycharles » Thu Aug 21, 2008 7:58 pm
OG 5.5 Problem Solving Q207

If n=4p, where p is a prime number greater than 2, how many different positive even divisors does n have, including n?

I have read the explanations but still haven't got it yet. Can anyone explain this to me? Thanks!
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Re: Divisor/Prime Number Question

by sudhir3127 » Thu Aug 21, 2008 8:10 pm
lpycharles wrote:OG 5.5 Problem Solving Q207

If n=4p, where p is a prime number greater than 2, how many different positive even divisors does n have, including n?

I have read the explanations but still haven't got it yet. Can anyone explain this to me? Thanks!
Plug in and check....

P is prime> 2 means its an odd number ( we know 2 is the only even prime)

assume p =3

n= 4*3 =12

even factors of 12 are 2,4,6 and 12.

hence the answer is 4.

Hope that helps..
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Junior | Next Rank: 30 Posts
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by lpycharles » Thu Aug 21, 2008 8:29 pm
Thanks it helps!
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