It is used for lots of things such as finding out the total possible outcomes of tossing coins. You find the line that corresponds with how many coins you toss and add all the numbers in that line to get the number of possible outcomes also you can use it to find combinations and permutations and triangular numbers
pascals triangle is used to solve math problems that have chance of 2 different outcomes, such as flipping a coin
The Sierpinski Triangle
i think blaise pascal invented the triangle.
Omar Khayyam discovered Pascal's triangle.
in the 11th century...
One was creating an early calculator and another for Pascals Triangle