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Is x an even integer? (1) x is the square of an integer. (2)

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Is x an even integer? (1) x is the square of an integer. (2) [#permalink] New post 25 May 2008, 01:39
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11. Is x an even integer?

(1) x is the square of an integer.
(2) x is the cube of an integer.
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Re: DS3-11: X even integer? [#permalink] New post 25 May 2008, 01:50
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So, the question is about C or E....

If x=m^6 where m is an integer, then x=(m^2)^3=(m^3)^2
So we can choose, for example, m=2 or m=3 and obtain odd or even x that satisfies both conditions.

E
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Re: DS3-11: X even integer? [#permalink] New post 25 May 2008, 01:56
thanks walker and all the best for your GMAT :)
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Re: DS3-11: X even integer? [#permalink] New post 25 May 2008, 01:58
walker wrote:
So, the question is about C or E....

If x=m^6 where m is an integer, then x=(m^2)^3=(m^3)^2
So we can choose, for example, m=2 or m=3 and obtain odd or even x that satisfies both conditions.

E


51 Math appoach is shorter or more time-saving than my approach!
Nice!
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Re: DS3-11: X even integer? [#permalink] New post 25 May 2008, 02:23
prasannar wrote:
thanks walker and all the best for your GMAT :)

Thanks :)
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Re: DS3-11: X even integer? [#permalink] New post 25 May 2008, 09:22
When r u giving ur GMAT? All the best for that.


walker wrote:
prasannar wrote:
thanks walker and all the best for your GMAT :)

Thanks :)
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Re: DS3-11: X even integer? [#permalink] New post 25 May 2008, 09:26
Thanks. May 28. My mind is going to boil away :help2 :)
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Re: DS3-11: X even integer?   [#permalink] 25 May 2008, 09:26
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