Probability Review Grade 7

The video tutorial covers various aspects of probability, including events and outcomes, describing probability using specific terms, and calculating both experimental and theoretical probabilities. It also explains the fundamental counting principle and compound probability through practical examples involving students, M&Ms, marbles, and other scenarios. The tutorial provides a comprehensive understanding of probability concepts and their applications.

How many ways can Mrs. McCluskey choose a girl from the class?

• 3

• 4

• 5

• 6

What is the probability of an event that is described as 'certain'?

• 100%

• 0%

• 25%

• 50%

If you draw an M&M from a bag 20 times and get 5 blue ones, what is the experimental probability of drawing a blue M&M?

• 1/3

• 1/5

• 1/4

• 1/2

In a bag of 48 marbles, if the theoretical probability of drawing a blue marble is 1/3, how many blue marbles are expected?

• 24

• 18

• 16

• 12

Using the fundamental counting principle, how many possible outcomes are there if you choose one class from each of three categories with 2, 3, and 4 options respectively?

• 12

• 30

• 18

• 24

What is the probability of rolling an even number on a die and flipping tails on a coin?

• 1/4

• 1/2

• 1/6

• 1/3

If you roll a die, what is the probability of rolling a number less than 5?

• 4/5

• 3/4

• 2/3

• 1/2

In a bag with 9 green and 7 pink marbles, what is the probability of drawing a pink marble first and then a green marble?

• 9/16

• 3/10

• 21/80

• 7/15

What is the probability of drawing two green marbles consecutively from a bag with 9 green and 7 pink marbles?

• 1/3

• 3/10

• 2/5

• 1/4

If you and a friend take turns drawing marbles in the order pink, pink, green, pink, what is the probability of this sequence?

• 3/64

• 9/208

• 5/128

• 1/16