R-AESPE-6

Table of Contents

Graph

Pascals Triangle

Pascal triangle cool

$nCr= n-1Cr-1 + n-1Cr$ - An element of pascal's triangle is equal to the sum of the 2 elements above it
$nCr = nCn-r$ - Symmetry of the triangle

Subsets of a set:

The number of subsets of a set of size n is $2^n$.
This means that the sum of the entries in row $n$ of Pascal's triangle is $2^n$.