If x/y is an integer, which of the following must also be not an integer?
I. xy
II. y/x
III. x  Choose the correct choice from the following options
A) I alone B) II alone C) III alone D) I, II and III E) None of the above
Let's take X = 4/3 and Y = 2/3   Then X/Y = 2 which is an integer.   But XY = 4/3 * 2/3 = 8/9 --&gt; Not an integer.   Y/X = 2/3 divided by 4/3 = 2/4 = 1/2 Not an integer.   X alone is 4/3. Not an integer.   Hence I, II and III.
<result>D</result>
If x/y is an integer, which of the following must also be not an integer?
I. xy
II. y/x
III. x