What is the greatest common factor of positive integers x and y?
(1) The greatest common factor of x/2 and y/2 is 5.
(2) x and y are even
A
don't get what statement one means, can anyone explain please
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cramya
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I think smt I means the GCF of x and y must be 10
Some pairs of numbers could be:
x=10 y=10
x=50 y=70
x=10 y=20
In any of the paitrs of numbers above the GCF is 10
Basically the statement means x and y are both even so stmt II is reduntant and 2 * 5 will be the GCF of x and Y
suff
P.S : Just my suggestion, Ian or others please correct me if I am mistaken.
For number properties questions or remainder problems if a theoritical or a conceptual solution evades u then pick some numbers that adhere to the constraints given in the problem. If u start seeing a pattern from any of the info in the individual statements and other info given in the question chances are most likely that statement is SUFFICIENT.
Regards,
CR
Some pairs of numbers could be:
x=10 y=10
x=50 y=70
x=10 y=20
In any of the paitrs of numbers above the GCF is 10
Basically the statement means x and y are both even so stmt II is reduntant and 2 * 5 will be the GCF of x and Y
suff
P.S : Just my suggestion, Ian or others please correct me if I am mistaken.
For number properties questions or remainder problems if a theoritical or a conceptual solution evades u then pick some numbers that adhere to the constraints given in the problem. If u start seeing a pattern from any of the info in the individual statements and other info given in the question chances are most likely that statement is SUFFICIENT.
Regards,
CR
