Please help with this one...
If x and y are positive integers, is xy a multiple of 8?
(1) The greatest common divisor of x and y is 10
(2) The least common multiple of x and y is 100
I thought that A was the answer, but it says that the answer is C
If x and y are positive integers, is xy a multiple of 8?
(1) The greatest common divisor of x and y is 10
(2) The least common multiple of x and y is 100
I thought that A was the answer, but it says that the answer is C
, it is useful to know the systematic approach to finding GCD and LCM. I have created a video tutorial at 
