IMO ans is option C
35x and 20y has 5 in them so depending on values of x and y all the options can be HCF but 35x will never be divisible by 20x.Hence the ans
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HCF
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Patrick_GMATFix
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When a number is divided by its factor, the result is always an integer. For example 12/3 or 12/6 are integers because 3 and 6 are factors of 12.
35x/20x is not an integer, so 20x cannot be a factor of 35x. As a result, 20x cannot be the greatest common factor of 35x and anything else (since it's not even a factor of 35x alone).
The answer is C
You can practice similar questions from the drill engine by setting topic='number properties' and difficulty='600-700'
-Patrick
35x/20x is not an integer, so 20x cannot be a factor of 35x. As a result, 20x cannot be the greatest common factor of 35x and anything else (since it's not even a factor of 35x alone).
The answer is C
You can practice similar questions from the drill engine by setting topic='number properties' and difficulty='600-700'
-Patrick
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