forum.virtualchallengemeets.com

These questions are pretty time consuming the fact that using systems of equations don't work w/ them! Is it kinda about logic and guessing? Or is there a trick for these type of questions?

logic man... its always logic... try a few - practice - i hate them under time pressure but they are fun to work with if there is unlimited time :P

I showed my logic/method on one problem shown . If logic doesn't work, guess a number and work your way there. That works for a lot of the problems, but can be either time-consuming or worth it, depending on your luck.

sometimes, these questions are just worth skipping...