What is the value of X ? 1) X! is odd 2) X is even : DS Archive
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# What is the value of X ? 1) X! is odd 2) X is even

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Manager
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What is the value of X ? 1) X! is odd 2) X is even [#permalink]

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16 Nov 2007, 17:22
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What is the value of X ?

1) X! is odd
2) X is even
Manager
Joined: 20 Sep 2006
Posts: 58
Followers: 1

Kudos [?]: 17 [0], given: 0

Re: DS - Factorials + Even/odd [#permalink]

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16 Nov 2007, 17:44
yuefei wrote:
What is the value of X ?

1) X! is odd
2) X is even

1) X can have 2 values 0 [0!=1=odd] & 1 [1!=1=odd]
NOT SUFFICIENT

2) X can have infinite values : 0, 2,4,6,8...
NOT SUFFICIENT

Considering 1 & 2 together X can only one value : 0

Ans C.
Re: DS - Factorials + Even/odd   [#permalink] 16 Nov 2007, 17:44
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