Probability

Front

What is probability?

Back

Probability is the measure of how likely an event is to occur, expressed as a number between 0 (impossible) and 1 (certain).

Front

What does it mean if an event is 'impossible'?

Back

An impossible event has a probability of 0, meaning it cannot happen.

Front

What does it mean if an event is 'certain'?

Back

A certain event has a probability of 1, meaning it will definitely happen.

Front

What is the probability of selecting a black marble if there are equal numbers of black and white marbles?

Back

The probability is 1/2, as both outcomes are equally likely.

Front

If a spinner has 8 sections, how do you calculate the probability of landing on a specific color?

Back

Divide the number of sections of that color by the total number of sections.

Front

What is the probability of spinning a color that is not on the spinner?

Back

The probability is 0, as it is impossible to land on a color that does not exist.

Front

How do you find the probability of an event that can happen in multiple ways?

Back

Add the probabilities of each individual way the event can occur.

Front

What is the probability of selecting a brown M&M from a bowl with 20 total candies and 2 brown candies?

Back

The probability is 2/20 or 1/10.

Front

If you randomly select a number from 0 to 10, what is the probability of selecting a number greater than 5?

Back

The probability is 5/11, as there are 5 numbers greater than 5 (6, 7, 8, 9, 10).

Front

What does 'equally likely' mean in probability?

Back

It means that all outcomes have the same chance of occurring.