If x and y are positive integers, what is the value of xy?

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If x and y are positive integers, what is the value of xy? [#permalink]

22 May 2006, 07:19

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If x and y are positive integers, what is the value of xy?

1) the greatest common factor of x is 10
2) the lcm of x and y is 180.

Can you please explain?

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22 May 2006, 09:11

C it is

GCF(X,Y) * LCM(X,Y) = X*Y

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Re: DS [#permalink]

22 May 2006, 13:17

remgeo wrote:

If x and y are positive integers, what is the value of xy?

1) the greatest common factor of x is 10
2) the lcm of x and y is 180.

incomplete question..... "greatest common factor of x is 10"? :roll:

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Re: DS [#permalink]

22 May 2006, 14:25

Professor wrote:

remgeo wrote:

If x and y are positive integers, what is the value of xy?

1) the greatest common factor of x is 10
2) the lcm of x and y is 180.

incomplete question..... "greatest common factor of x is 10"? :roll:

True - 1) has to be GCF of x and y...

And answer has to be C.

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22 May 2006, 15:42

If I were taking the test, I would guess C. I know that each is insufficient, but not exactly sure how to break it down far enough to differentiate between C and E.

Anyone?

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23 May 2006, 03:57

C. Provided 1) means GCF of x and y is 10

GCF(of two numbers) * LCM(of two numbers) = product of the numbers

Hence both the statements are required.

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16 Jun 2006, 08:17

x242222 wrote:

If I were taking the test, I would guess C. I know that each is insufficient, but not exactly sure how to break it down far enough to differentiate between C and E.

Anyone?

product (x, y) = lcm (x,y) * gcf (x,y)

Thats a formula to mug

[#permalink] 16 Jun 2006, 08:17

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If x and y are positive integers, what is the value of xy?

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If x and y are positive integers, what is the value of xy?

If x and y are positive integers, what is the value of xy?

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