Brain Flex

간단한 문제를 해결하여 뇌 근육을 운동.

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.