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

You are not logged in. #1 20050222 02:53:40
calculationI have to show how the odds of winning the english national lottery are worked out.6 correct balls from 49.Could someone show me how the formula is expressed. #2 20050222 09:02:27
Re: calculationThe subject is "Permutations and Combinations". "The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman #3 20060207 09:31:12
Re: calculation;);)
#4 20060207 09:40:42
Re: calculationAll the maths has been dealt with, so all I can do is hop in with a fun fact that might get you extra marks if you're lucky. Why did the vector cross the road? It wanted to be normal. #5 20060207 17:18:55
Re: calculationSo the moral of the story is... ah... don't buy your ticket before Friday? #6 20060207 18:26:49
Re: calculationOr other: IPBLE: Increasing Performance By Lowering Expectations. #7 20060208 03:34:14
Re: calculationHmm. That would cost you ≈£14 million, but I'm sure there have been jackpots higher than that. Why did the vector cross the road? It wanted to be normal. #8 20060208 19:43:05
Re: calculationIn the beginning you have 49 numbers. You have to take 1 number and it should match 1 of the 6 already chosen numbers. If there is only one number to match, choosing the right number from the 49 numbers would have probability of (1/49) Since you have 6 numbers, matching one of them would have probability (6/49). Now you have 48 numbers and 5 numbers to match. So choosing a second right number would have probability (5/48) and so on. 