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

You are not logged in. #1 20060620 18:07:07
Coin ProblemThere are six identical coins with diameters a whole number of millimetres. I have started making a tray to stack them in, as shown: Last edited by tongzilla (20060621 01:43:42) #3 20060621 08:47:57
Re: Coin ProblemGood puzzle, tongzilla. Possibly noone has solved it yet! "The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman #4 20060627 01:32:58
Re: Coin ProblemStill no one? #9 20060821 05:49:22
Re: Coin ProblemThat is a very nice puzzle. I'd have tried to solve it earlier, but I've only just seen it because I was busy over the weekend. Anyway, I'm not entirely sure this is right, but here's what I've got: And if that's not right then I'm well and truly stumped. Why did the vector cross the road? It wanted to be normal. #10 20060822 19:36:17
Re: Coin Problemmathsyperson, good work! Last edited by tongzilla (20060822 19:59:00) #11 20060822 23:49:48
Re: Coin ProblemOoh, I get it. Why did the vector cross the road? It wanted to be normal. #12 20060823 13:29:52
Re: Coin ProblemGood thinking mathsyperson! You're the winner of a matching salt and pepper set! In fact, there are other "solutions" that seem to fit, but if you examine the amount of overlap you will realise that it doesn't correspond to the diagram shown in the question. #13 20060905 04:52:19
Re: Coin ProblemDid you compare two coin orders (from left to right) of 1221 with 1212 or 1221 with 2112 , Mathsyperson ? #14 20060905 05:22:26
Re: Coin ProblemI started off with 1221 and then switched the righthand bit to get 1212. Why did the vector cross the road? It wanted to be normal. #15 20060905 06:55:20
Re: Coin Problem
(If o=9 then ab=1, a>b; o<=d/2) Last edited by tt (20060906 14:39:28) 