An Intro to Finding Probability | Basic Probability | Math with Mr. J

What does probability tell us about an event?

• How likely something is to happen

• The exact time an event will occur

• The certainty of an event happening

• The number of times an event has happened before

Which two numbers are essential for calculating the probability of an event?

• Number of favorable outcomes and number of unfavorable outcomes

• Number of favorable outcomes and total number of possible outcomes

• Total number of possible outcomes and the number of times the event has happened

• The event's start time and end time

On a spinner with four equal sections labeled 1, 2, 3, and 4, how many favorable outcomes are there for landing on the number 3?

• 4

• 3

• 2

• 1

What is the probability of landing on the number 3 when spinning a spinner with four equal sections labeled 1, 2, 3, and 4?

• 1/2

• 1/3

• 1/4

• 3/4

What does probability measure?

• The size of an object

• How likely an event is to happen

• The speed of an action

• The number of items in a group

What is the probability of landing on the number 3 when spinning the given spinner once?

• 1/4

• 1/3

• 3/4

• 1/2

Which of the following events is considered "unlikely"?

• An event with a 70% chance of happening

• An event with a 25% chance of happening

• An event with a 50% chance of happening

• An event with a 90% chance of happening

What is the probability of picking a red marble from the given collection?

• 3/10

• 7/10

• 1/2

• 1/10