Simple Probability

Front

What is probability?

Back

Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Front

What is the formula for calculating probability?

Back

The probability of an event is calculated as the number of favorable outcomes divided by the total number of possible outcomes: P(Event) = Number of Favorable Outcomes / Total Outcomes.

Front

What is the probability of spinning a green section on a spinner with 4 equal sections: red, blue, green, and yellow?

Back

1/4

Front

How do you calculate the probability of choosing a letter that is NOT 'A' from the word 'ALGEBRA'?

Back

There are 5 letters that are not 'A' (L, G, E, B, R) out of a total of 7 letters. Thus, the probability is 5/7.

Front

What is a prime number?

Back

A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.

Front

What is the probability of spinning a prime number on a spinner with numbers 1 to 4?

Back

The prime numbers between 1 and 4 are 2 and 3. Therefore, the probability is 2/4 or 1/2.

Front

If a bowl contains 8 balls, 2 of which are red, what is the probability of choosing a red ball?

Back

The probability of choosing a red ball is 2 out of 8, which simplifies to 1/4.

Front

What is the probability of rolling an even number on a standard six-sided die?

Back

There are 3 even numbers (2, 4, 6) on a die, so the probability is 3/6 or 1/2.

Front

What is the difference between theoretical probability and experimental probability?

Back

Theoretical probability is based on the expected outcomes in a perfect world, while experimental probability is based on actual experiments and observed outcomes.

Front

What is a sample space in probability?

Back

A sample space is the set of all possible outcomes of a probability experiment.