January 2010 archive

Prime Numbers

A prime number by definition is a number p>1 such that p has no positive integer divisors other than 1 and p.

Wait… What?

Monty Hall Problem – Solved

Before the holidays I posted a question to you all to get your opinions. The question posed regarded the famous Monty Hall problem in which there are 3 doors and are told 1 has a fabulous present while the other 2 have goats. You select a random door and the host reveals one of the doors that have a goat and gives you a chance to switch doors if you want or not. The question was: is it better to keep the original door, switch doors, or are the odds the same?