2009-03-12, 02:26 PM
(This post was last modified: 2009-03-12, 02:29 PM by Kawasari Mimoto.)
Dusk Wrote:What the hell are you smoking?
X X X girl girl Y boy boy
If you're looking at that as chromosomes, individually, yes, 50% would be the right answer. But technically, the correct answer is 33%.
As Opeth stated about flipping coins, here's how it works. Let's say you aim to get 2 heads out of '2' coins. Most people would say, that's a 50% rate! ... Wrong.
Flip #1: Head / Tail, you get Head. 50%
Flip #2: Head / Tail, you get Head again. So you actually divide it up by 2. Making it a 25% success rate of landing 2 'heads' out of 2 coins.
Quote:To explain more in depth, 50% * .5 or 50% / 2
Lern2mathpls.
As for the 33% ratio, that's because the chances of anyone giving birth to males is just 33%. The chances of females are 66%. If you read some Biology book or maybe some anatomy books, perhaps it'll list it on there, but I read a lot of sources that says it's 33%.
PS: Also, if you flip 4 coins, what are the chances that they will all be 'head'?
50% * .5 * .5 * .5 * .5 = answer, making it 3.125%