probability Ela

Probability

Permutations and Combinations

Permutations

Combinations

What's the difference?

• The order of the elements

For Example...

• In permutations, we care about the order

• AB is not the same as BA

• In combinations, the order doesn't matter

• AB is the same as BA

Multiple Choice

The order does not matter in permutations.

• True

• False

Multiple Choice

Your locker passcode is 5432. Is this a permutation or combination?

• Permutation

• Combination

Multiple Choice

Is choosing 3 desserts from a menu of 10 desserts a permutation or combination?

• Permutation

• Combination

Multiple Choice

A menu has 6 different sandwiches, with 3 choices of potato chips, 3 types of salad and 5 different beverages. How many different lunch combinations consisting of a sandwich, chips and beverage can be ordered?

• 30

• 17

• 90

• 270

Multiple Choice

In a science fair, first, second, third, and one honorable mention will be awarded. In how many ways can this be done if there are 36 entries? Hint - Does order matter?

• 1,413,720

• 36!

• 25,200

• 91,390

Multiple Choice

A pizza shop offers a special of any 3 toppings for a fixed price. if there are 8 toppings on the menu, how many choices does the special offer?

• 32

• 40

• 48

• 56

Multiple Choice

When does the order in which you are choose matter?a

• Combination

• Permutation

Multiple Choice

In a standard deck of 52 cards, what is the probability of drawing one ace after another ace on two draws (no replacing)?

• 1/221

• 1/4

• 1/169

• 1/13