Basic Probability

Front

What is probability?

Back

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

Front

What is an event in probability?

Back

An event is a specific outcome or a set of outcomes from a probability experiment.

Front

What does it mean if an event has a probability of 0?

Back

It means the event is impossible and will not occur.

Front

What does it mean if an event has a probability of 1?

Back

It means the event is certain and will definitely occur.

Front

How do you calculate the probability of a single event?

Back

Probability = (Number of favorable outcomes) / (Total number of possible outcomes).

Front

What is the probability of spinning an odd number on a spinner with numbers 1-8?

Back

The probability is 4/8 or 1/2, since there are 4 odd numbers (1, 3, 5, 7) out of 8.

Front

What is the probability of landing on a letter that is NOT A in the word 'BANANA'?

Back

The probability is 3/4, since there are 6 letters total and 3 are not A.

Front

What is the probability of flipping a coin and getting heads?

Back

The probability is 1/2, as there are two possible outcomes: heads or tails.

Front

If a spinner is divided into 8 equal parts, what is the probability of landing on one specific section?

Back

The probability is 1/8, as there is one favorable outcome out of 8 possible outcomes.

Front

What is the probability of rolling a 3 on a fair six-sided die?

Back

The probability is 1/6, since there is one favorable outcome (rolling a 3) out of 6 possible outcomes.