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

You are not logged in. #1 20060207 09:48:11
Four Equals Five1) 16  36 = 25  45 Last edited by NoSash (20060207 09:57:55) #2 20060207 09:58:00
Re: Four Equals Fivewhen you take the square root, you need the ± which gives you a few different combinations...this "proof" just uses one combination that does not work. The greatest challenge to any thinker is stating the problem in a way that will allow a solution. Bertrand Russell #3 20060207 17:57:01
Re: Four Equals Fivee.a. Last edited by krassi_holmz (20060207 17:57:47) IPBLE: Increasing Performance By Lowering Expectations. #5 20060207 20:00:30
Re: Four Equals FiveYep. IPBLE: Increasing Performance By Lowering Expectations. #6 20060208 03:37:19
Re: Four Equals FiveAll of the above is correct. They've hidden it with lots of unnecessary complications, but what they're basically doing is saying that as x² = (x)², then x = x, even though it doesn't. Why did the vector cross the road? It wanted to be normal. 