# Probability for Algebra 2

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Category: Education

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By: shivamlamba1 (101 month(s) ago)

## Presentation Transcript

### Probability :

Probability Ben and Jessie

### Counting :

Counting The fundamental counting principle – n1 . n2 . n3…nk Example- 3 Types, 4 toppings, 3 dressings 3 . 4 . 3= 36 combinations YOU TRY- Problem: Sam can choose from gray or black pants, Orange, yellow or green shirt and sneakers or flip flops. How many outfits can he form? 12 outfits

### Permutation :

Permutation Example- How many ways can 5 books be put on a shelf? 5! or 5P5 = 5.4.3.2.1= 120 Circular permutations- (n-1)! How many ways can 6 people sit at a table? (6-1)! = 5! = 120 YOU TRY- How many ways can 6 pairs of pants fit in a draw? How many ways can 10 people sit a circular table? 1.720 2.362880

### Combinations :

Combinations Example-How many sets of 2 people can you take from a group of 10? 10C2 = 45 YOU TRY-There are 30 people in a club. How many ways can 4 be selected as officers? 27405

### And/Or :

And/Or And = Multiply Or = Add YOU TRY-A bag contains 5 red marbles, 7 green, and 10 blue. One marble is drawn at random and replaced. 1. What is the probability it will be red or green. 2.What is the probalbilty that the first two you pull and replace are green and blue? 1.12/22 = 6/11 2.17/22

### COMMON MISTAKES! :

COMMON MISTAKES! The end!