I would go with E
(Y)(M) = (X)(K) (a)
1. If x is a factor of Y, then we still do not know anything about M and K. Insuff.
2. It is not enough to know that K is less than or equal to M. We need to know if k is a "factor" of M.
1 + 2 . No additional info. E
I also used numbers that matched the conditions given in both 1 & 2. For example.
Is (4) (8) = (2) (7) (a)
Here is clear that x is a factor of Y and K is less than M. but Xk is not a factor of YM.
DS - positive integers
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PussInBoots
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restate: is ym/xk=integerXbond wrote:Hi there,
Could you explain in the simplest this concept and how to resolve it
x, y, k, m are positive integers, is xk a factor of ym ?
(1) x is a factor of y
(2) k <= m
s1) y/x=integer but that doesn't resolve m and k insufficient.
s2) k could be equal to m or less than m but that doesn't resolve y and x...
s1+s2) y and x is sorted out but m and k are not. m could equal k, which would give us answer yes. but m could also be greater than k, which would us answer no. insufficient.
therefore E
you got this man!
