LethalMonkey wrote:

shadowcatradz wrote:

x > y, x and y are positive integers. Which of the following statements provide the necessary information to state that y is a factor of x?

1. x/y = k; k is a positive integer

2. x is a multiple of 6 and y is a multiple of 3

3. Every prime factor of y is also a prime factor of x.

1. This is true only for even number, but x and y can be odd too.

2. but y cannot be multiple of 3 and then factor of x for all cases e.g. X = 54 and Y = 15.

3. This is possible e.g. if we factor out a multiple of 6 say 18 = 2*3*3 and 9 = 3*3 , so factor of 9 included in 18. so option 3 is the answer.

I think you got the first option wrong my friend.

What the question wants to know is if x= a* y (where a is any number) they are asking if x is a factor of Y.

Now option one states that x/y=K which if you make simpler would look like x=Y*K which means both K and Y are factors of X.