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Is the integer n odd? (1) n is divisible by 3. (2) 2n is

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Manager
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Is the integer n odd? (1) n is divisible by 3. (2) 2n is [#permalink] New post 03 Jun 2006, 22:24
Is the integer n odd?
(1) n is divisible by 3.
(2) 2n is divisible by twice as many positive integers as n.
Manager
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 [#permalink] New post 05 Jun 2006, 00:10
Although not very sure but to me answer seems to be E
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 [#permalink] New post 05 Jun 2006, 07:55
humans wrote:
Although not very sure but to me answer seems to be E


For n to meet (2), n can only be odd.

When not B??
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 [#permalink] New post 05 Jun 2006, 15:04
I say (B)

1) n = 3*k where k is itenger
k : odd > n is odd
k : even > n is even

Not Sufficient

2) The only cases that 2n is divisible by twice as many positive integers as n are for prime numbers without 2.
As all prime number except 2 are odds, thus n must be odd.

Sufficient
  [#permalink] 05 Jun 2006, 15:04
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Is the integer n odd? (1) n is divisible by 3. (2) 2n is

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