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 and 1.

Front

What does a probability of 0 mean?

Back

A probability of 0 means that the event is impossible and will not occur.

Front

What does a probability of 1 mean?

Back

A probability of 1 means that the event is certain and will definitely occur.

Front

How do you calculate the probability of an event?

Back

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

Front

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

Back

1/8.

Front

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

Back

Even chance (4 odd numbers: 1, 3, 5, 7 out of 8 total numbers).

Front

If a bag contains 3 black marbles and 2 white marbles, what is the probability of picking a black marble?

Back

3/5.

Front

What is the probability of rolling a die and getting a number greater than 4?

Back

1/3 (only 5 and 6 are greater than 4).

Front

What is the probability of spinning green on a spinner with 4 colors: red, blue, green, yellow?

Back

1/4.

Front

What is the probability of rolling a cube and landing on an even number?

Back

1/2 (even numbers: 2, 4, 6 out of 6 total numbers).