MAT 114 / 142 Unit 1: Sets and Counting Formulas

Formula Sheet

n of open paren A union B close paren equals n of A plus n of B minus n of open paren A intersection B close paren

n of open paren A intersection B close paren equals n of A plus n of B minus n of open paren A union B close paren

$P of open paren n comma r close paren equals the fraction with numerator n factorial and denominator open paren n minus r close paren factorial$
$C of open paren n comma r close paren equals the fraction with numerator n factorial and denominator r factorial open paren n minus r close paren factorial$

Picture Cards and Face Cards are the same thing.

Picture for rolling a pair of dice.

Results combinations from rolling two six sided dice depicted using a table of images of individual die sides