Question

If x >3 and y< 1, then xy >0 Is this always, sometimes, or never true?

Answer 1

If x and y can only take integer values, then the statement is never true.

If x and y can take any real value, then the statement is sometimes true.
If x=4, y=0.5, then xy=2>0
If x=4, y=0, then xy=0 which is not greater than 0.
So the statement is sometimes true.

Answer 2

And another one
If x>= 0 and y> 1, then xy >0

Answer 3

Thank you!

Answer 4

Yw :)