Home Quiz WHICH NUMBER SHOULD BE IN THE RED SQUARE? Quiz WHICH NUMBER SHOULD BE IN THE RED SQUARE? By Sophie - 27/03/2021 Our brains need workouts. Short puzzles and riddles are the perfect way to train your brain. 1.TEST 1 A N S W E R : 2. TEST 2 A N S W E R : 3.TEST 3 A N S W E R : 4. TEST 4 A N S W E R :