Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ ¹ ² ³ °
 

You are not logged in. #1 20100317 20:54:03
Prove that minus one is a blind numberA signed number is not blind if when it is divided into numbers with lower signs, their definite end product is not both + and  itself Last edited by LQ (20100318 00:51:55) I see clearly now, the universe have the black dots, Thus I am on my way of inventing this remedy... 