Lesson

In everyday life, we can't always say that things will *definitely* happen. For example, if it is cloudy one day, we can't be sure that it will definitely rain.

In math we look at events or run experiments and work out how likely it is that a result (outcome) will happen. To do this, we need to know every outcome that could happen. The video below will take you through how we work this out.

Key words in probability

- Experiment: a test run on an action where the result is uncertain
- Outcome: a result of an experiment

A coin is flipped. What outcomes could happen?

Black

AHeads

BTails

CRed

DBlack

AHeads

BTails

CRed

D

A standard six-sided die is rolled.

What is the sample space of numbers rolled?

Write your answers on the same line, and separate your answers with commas.

A game in a classroom uses this spinner.

What can the spinner land on? Select all that are true.

Blue

ARed

BPurple

C$5$5

D$7$7

E$9$9

FBlue

ARed

BPurple

C$5$5

D$7$7

E$9$9

FWhat can the spinner land on? Select all that are true.

A blue segment with a $2$2 on it

AAn orange segment with a $6$6 on it

BA brown segment with a $6$6 on it

CA green segment with a $7$7 on it

DA blue segment with a $2$2 on it

AAn orange segment with a $6$6 on it

BA brown segment with a $6$6 on it

CA green segment with a $7$7 on it

D