Food For Thought
Albert Einstein once wrote on a blackboard: 9 x 1 = 9 9 x 2 = 18 9 x 3 = 27 9 x 4 = 36 9 x 5 = 45 9 x 6 = 54 9 x 7 = 63 9 x 8 = 72 9 x 9 = 81 9 x 10 = 91 Suddenly chaos erupted in the classroom because Einstein made a mistake. Obviously, the correct answer to 9 × 10 isn’t 91. And all his students... Sign in to see full entry.