●●● ●●●● ●●●●● ●●●● ●●0●● Basic Counting Techniques ●●●0 ●●●● ● Product rule If there are al possibilities from set a and b possibilities from set B, then there are Ax B ways to combine one from a and one from b E.g., suppose you own 5 shirts and 4 pants, then there are 5x4 =20 different ways you can get dressed ● Sum rule If there are a possibilities from set a and b possibilities from set B, then there are A+b ways for either A or b to occur(assuming the elements of a and B are distinct)4 Basic Counting Techniques ⚫ Product Rule ⚫ If there are |A| possibilities from set A and |B| possibilities from set B, then there are |A|x|B| ways to combine one from A and one from B. ⚫ E.g., suppose you own 5 shirts and 4 pants, then there are 5x4 =20 different ways you can get dressed. ⚫ Sum Rule ⚫ If there are |A| possibilities from set A and |B| possibilities from set B, then there are |A|+|B| ways for either A or B to occur (assuming the elements of A and B are distinct)