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ongste
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X and Y are positive integers, what is the value of X and Y?

1) the greatest common factor of X and Y is 10
2) the least common multiple of X and Y is 180



yup having given the question to find xy the answer would be C as x y = lcm x gcd

if its find x and y then the answer would be E.

www.graduatetutor.com
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ongste
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Sorry, made a typing error.. should be

X and Y are positive integers, what is the value of XY?

1) the greatest common factor of X and Y is 10
2) the least common multiple of X and Y is 180

and the OA is C

Can someone please explain how to answer this question?
thanks
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cul3s
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x.y = Greatest Common Factor (x,y) . Least common multiple (x,y)
This is a formula (for example/proof, see https://en.wikipedia.org/wiki/Least_common_multiple)

So you need both statements and thus answer is C.
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IMO c

The formula is :

Product of two numbers = HCF * LCM
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Right that is the property.

xy=1800

gurpreet07
IMO c

The formula is :

Product of two numbers = HCF * LCM



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