Integers

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Integers

by danjuma » Sat Oct 02, 2010 9:15 pm
If 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 mulltiple of x and y is 180
Source: — Data Sufficiency |

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by ashokkadam » Sat Oct 02, 2010 11:48 pm
C.

Remember, product of any 2 numbers = GCD * LCM.
example, 4 and 6

product = 4*6 = 24
GCD = 2
LCM = 2*2*3 = 12

thus 24 = 2*12
danjuma wrote:If 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 mulltiple of x and y is 180
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