Basic Probability and Permutations Combinations

What is the formula for Permutations?

• n!

• ^n!∕_(n-r)!

• ^n!∕_(n-r)! r!

• ^r!∕_{(r-n)! n!}

What is the formula for Combinations?

• ^n!∕_(n-r)! r!

• ^n!∕_(n-r)!

• ^r!∕_{(r-n)! n!}

• n!

If all items chosen are treated the same it is a ....

• Comparision

• Permutation

• Combination

• Position

If all items chosen are treated differently it is a ...  

• Comparision

• Permutation

• Combination

• Position

Calculate ₈P₂

Mathematical Equivalence

OFF

How many ways can 8 runners finish in the top 3 places where the prizes for 1^st, 2^nd, and 3^rd are all different and matter?

Mathematical Equivalence

ON

Calculate the following:

₁₂P₅

Mathematical Equivalence

ON

What is the n value for choosing 5 cards from a standard deck of cards? 

• 2

• 5

• 13

• 52

How many ways can 8 cheerleaders be chosen for 3 positions on the cheer team?

• 24

• 56

• 128

• 336

How many ways can 9 runners medal (Gold, Silver or Bronze) in a race?

• 27

• 84

• 216

• 504