3.2 counting rules

Question 1

fundamental counting principle

Answer 1

status that when picking one item each , from several groups of items , the total number of combinations of those items is equal to the product of how many items are in each type

Question 2

combinations

Answer 2

for a selection of r elements drawn a population of N elements , is found using the formula

Question 3

!

Answer 3

is the factorial symbol

Question 4

factorial

Answer 4

is a whole number multiplied by all whole numbers going down to 1

Question 5

permutation

Answer 5

is an ordering of r elements from a set of N distinct elements