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.
OA after some discussions
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GCD
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Tryingmybest
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karmayogi
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I guess, statement#1 has typo error. If no error then IMO ETryingmybest wrote:What is the greatest common factor of positive integers x and y?
(1) The greatest common factor of and is 5.
(2) x and y are even.
OA after some discussions
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Tryingmybest
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Mustang
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IMO A
if GCD of x/2 and y/2 is 5 then essentially we are multiplying both (x/2) and (y/2) by 2 to get x and y. therefore 2 becomes a common factor of both x and y and so the GCD of x and y will be 2* [GCD of (x/2) and (y/2)].
if GCD of x/2 and y/2 is 5 then essentially we are multiplying both (x/2) and (y/2) by 2 to get x and y. therefore 2 becomes a common factor of both x and y and so the GCD of x and y will be 2* [GCD of (x/2) and (y/2)].
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Tryingmybest
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