The birthday problem states that if you take any random twenty three people and started writing down their birthdays, there's an over fifty percent chance that two of them have the same birthday. Twenty three people! That's a lightly crowded bus of people. Think of that tomorrow during your morning commute. Imagine how many thousands of times you've shared the room with two people with the same birthday. Stranger still, when you have fifty seven people all together there's a ninety nine percent chance of two of them sharing birthdays! If that's starting to sound far fetched consider that we're talking about any two people having the same birthday. For example; the likelihood of someone having the same birthday as you from a group of 235 people is only around fifty percent.
