MY BOSS POSED THIS QUESTION TO US. THE FIRST WITH THE CORRECT ANSWER WINS. tHANKS!
In a city of 200,000 people, no one has more than 100,000 hairs on his or her head, and no one will have fewer than 1. What are the chances that two inhabitants have exactly the same number of hairs? (Nose and ear hairs don't count.)

If there are at least 100,001 people then rwo must have the same number of hairs - the probability is 1.

Penny

Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.