“I can do basic calculus (and XO min QE,) but my 4th grader’s brain teaser has me drinking doubles”. Get your brain working and try to crack this puzzle. Reddit users are actively trying to ...

Ranging from simple to complex, these puzzles offer a fun yet challenging way to give your brain a workout. Math-based brain teasers ... of mathematics: “2 + 4 = 8, 5 + 6 = 3, 9 + 5 = 9 ...