Brain Flex

Tập thể dục cơ bắp não của bạn giải quyết vấn đề đơn giản.

Train and exercise your brain by continuously solving simple problems. You have 30 seconds to solve each problem.

Your goal is to get a result in the yellow box by using the available numbers and using any of the 4 basic operators

(+ , - , x, /). Your score increases by the remaining time. So the faster you solve the problem the higher score you get.