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If x and y are distinct prime numbers, which of the followin

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If x and y are distinct prime numbers, which of the followin [#permalink] New post 08 Apr 2019, 09:41
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If x and y are distinct prime numbers, which of the following could be true?

A. \(\frac{x^y}{y}\) is an odd integer

B. \(x^2y^3=x^2\)

C. \(\frac{y^x}{4}\) is an even integer

D. \(\frac{xy}{2}\) is an even integer

E. \(x^y=y^x\)
[Reveal] Spoiler: OA

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1 KUDOS received
GRE Instructor
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Joined: 10 Apr 2015
Posts: 1650
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Kudos [?]: 1575 [1] , given: 8

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Re: If x and y are distinct prime numbers, which of the followin [#permalink] New post 09 Apr 2019, 17:31
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GreenlightTestPrep wrote:
If x and y are distinct prime numbers, which of the following could be true?

A. \(\frac{x^y}{y}\) is an odd integer

B. \(x^2y^3=x^2\)

C. \(\frac{y^x}{4}\) is an even integer

D. \(\frac{xy}{2}\) is an even integer

E. \(x^y=y^x\)


The keyword here is COULD.

Scanning the answer choices, I see that C could be true.
If x = 2 and y = 3, then (x^y)/4 = (2³)/4 = 2, and 2 IS an even integer.

Answer: C

Cheers,
Brent
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Brent Hanneson – Creator of greenlighttestprep.com
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Re: If x and y are distinct prime numbers, which of the followin   [#permalink] 09 Apr 2019, 17:31
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