This question is my modified version of a question found somewhere else.I hope it's ok to post it here. When A is divided by 7, the remainder is X. When B is divided by 7, the remainder is Y. What is the value of X+Y? (1) A + B is divisible by 7 (2) A-B is divisible by 7 my solution: 1. A + B (mod 7...

I'm not sure if it is ok to do this: 1) x|x| < x I divided each side with x,keeping in mind that x could be + or - if x >0 then |x| < 1 if x < 0 then |x| > 1 therefore not sufficient 2) |x| > x x < 0 , x could be a "small" negative number or a "large" negativ...