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For integers x and y, when x is divided by y, the remainder is odd. Which of the following must be true?

A. x is odd. Not necessarily true. Consider x=4 and y=3.

B. xy is odd. Not necessarily true. Consider x=4 and y=3.

C. x and y share no common factors other than 1. Not necessarily true. Consider x=3 and y=6.

D. The sum x + y is odd. Not necessarily true. Consider x=1 and y=3.

E. At least one of x and y is odd. If both x and y were even, then the remainder when x is divided by y would be even, not odd. Hence at least one of x and y is odd.

Re: For integers x and y, when x is divided by y, the remainder [#permalink]

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28 Feb 2013, 07:02

For integers x and y, when x is divided by y, the remainder is odd. Which of the following must be true?

A. x is odd. May be. not must. B. xy is odd. x= 6, y =5 R= 1. xy is not odd C. x and y share no common factors other than 1. x=12 , y=9. r= 3. common factor = 3, 1 D. The sum x + y is odd. x= 3, y=5. r= 3. x+y = 8 even E. At least one of x and y is odd. correct _________________

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16 Feb 2015, 05:44

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Re: For integers x and y, when x is divided by y, the remainder [#permalink]

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13 Mar 2016, 06:46

Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: For integers x and y, when x is divided by y, the remainder [#permalink]

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17 Mar 2016, 05:46

Here we the easiest way out is use the examples Now by using 3/11 ; 3/9 and 3/12 => all options can be eliminated except the last one => E
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Re: For integers x and y, when x is divided by y, the remainder
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17 Mar 2016, 05:46

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