Probability

Front

What is probability?

Back

Probability is a way to measure how likely something is to happen. It is usually expressed as a number between 0 and 1, where 0 means it will not happen and 1 means it will definitely happen.

Front

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

Back

An event is 'certain' if it is sure to happen. For example, if you flip a coin, it is certain that it will land as either heads or tails.

Front

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

Back

An event is 'impossible' if it cannot happen at all. For example, rolling a 7 on a standard 6-sided die is impossible.

Front

What is the probability of choosing a letter from a word?

Back

To find the probability of choosing a letter from a word, divide the number of times the letter appears by the total number of letters in the word.

Front

If there are 4 yellow marbles and 8 blue marbles, what is the total number of marbles?

Back

The total number of marbles is 4 + 8 = 12.

Front

What is the probability of picking a blue marble from a bag with 4 yellow and 8 blue marbles?

Back

The probability is 8 out of 12, which simplifies to 2 out of 3.

Front

What is a spinner in probability?

Back

A spinner is a tool used in probability that can land on different sections, each representing a different outcome.

Front

How do you calculate the probability of a spinner landing on a specific color?

Back

To calculate the probability, divide the number of sections of that color by the total number of sections on the spinner.

Front

What is the probability of rolling a 2 on a 6-sided die?

Back

The probability is 1 out of 6, because there is one '2' and six total possible outcomes.

Front

What does 'more likely' mean in probability?

Back

'More likely' means that an event has a higher chance of happening compared to another event.