Probability

Front

What is probability?

Back

Probability is a measure of how likely an event is to occur, expressed as a number between 0 and 1, where 0 means the event will not happen and 1 means it will definitely happen.

Front

What is the probability of an event that is certain to happen?

Back

100% or 1.

Front

What is the probability of an event that is impossible?

Back

0% or 0.

Front

How do you express probability as a fraction?

Back

Probability can be expressed as the number of favorable outcomes divided by the total number of possible outcomes.

Front

What is an unlikely event in probability?

Back

An unlikely event is one that has a probability close to 0.

Front

What is the probability of spinning a number on a spinner that has equal sections?

Back

The probability is the number of favorable sections divided by the total number of sections.

Front

If a spinner has 6 equal sections numbered 1 to 6, what is the probability of landing on an even number?

Back

50% or 1/2, since there are 3 even numbers (2, 4, 6) out of 6.

Front

How do you convert a decimal to a percentage?

Back

Multiply the decimal by 100 and add a percent sign.

Front

What is the probability of selecting a specific item from a group?

Back

The probability is 1 divided by the total number of items in the group.

Front

In a bag with 4 red, 3 blue, and 5 green marbles, what is the probability of picking a blue marble?

Back

The probability is 3/12 or 1/4.