How to use Pascal's triangle to solve probability problems in Genetics

One of the most interesting Number Patterns is Pascal's Triangle (named after Blaise Pascal, a famous French Mathematician and Philosopher).
To build the triangle, start with "1" at the top, then continue placing numbers below it in a triangular pattern.
Each number is the numbers directly above it added together.
Heads and Tails
Pascal's Triangle can show you how many ways heads and tails can combine. This can then show you the probability of any combination.