So, the other day I was talking to my friend and she said, "Danny, how many people do you need to get in a room to have more than a 50-50 chance that two people will share a birthday?"
I was like, "That's a bit random! I don't know, top of my head, 366."
"No!"
"OK, I don't know Ashlie, tell me."
"Twenty three."
"Twenty three!" Bullshit!"
Apparently, it's 23. I don't know how it can be 23, and even when she explained it, I didn't get it. So, I want to test this.
This is how this will work. We'll call this thread our 'room.' Every time someone comes in, you have to introduce yourself with your username and give your date of birth (not the year, I don't need to know how old you are).
Let's get this running for a while and then check the results. I'm sceptical about this, but I kind of want it to work. Please don't 'monitor' the thread and wait for a match, as that will spoil it.
I'll start. My name is DanielleX. My date of birth is 15th March.
Apparently, the best way it was explained to me and I'm not sure I get it is this:
When you tell people this they tend to think about themselves, but the puzzle is not asking what the chance is that someone will share a birthday with YOU. The chances of that are much higher. This is just that anyone shares a birthday with anyone else. Apparently you need only 70 people in the room for the chances to be virtually 100%
I've just published chapter seven of Undercovers Detective. I would love your feedback on this story. I'm planning on ten chapters at least. If you haven't read one yet, I've included links. I hope you like them.
