Understanding Theoretical Probability

Front

What is theoretical probability?

Back

Theoretical probability is the likelihood of an event occurring based on all possible outcomes, calculated as the number of favorable outcomes divided by the total number of possible outcomes.

Front

How do you calculate the probability of an event?

Back

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

Front

If a bag contains 5 red balls and 3 blue balls, what is the probability of picking a red ball?

Back

5/8

Front

What is the probability of rolling a number greater than 4 on a fair six-sided die?

Back

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

Front

In a spinner divided into 4 equal parts (red, blue, green, yellow), what is the probability of landing on blue?

Back

1/4

Front

What is the probability of drawing a heart from a standard deck of cards?

Back

1/4 (there are 13 hearts in a deck of 52 cards).

Front

If you flip a coin, what is the probability of getting heads?

Back

1/2

Front

What is the probability of rolling a 2 or a 3 on a fair six-sided die?

Back

1/3 (2 favorable outcomes: 2 and 3).

Front

If a bag contains 3 red, 2 green, and 5 yellow marbles, what is the probability of picking a green marble?

Back

2/10 or 1/5.

Front

What is the probability of not rolling a 1 on a fair six-sided die?

Back

5/6 (5 outcomes are not 1).