Probability (Simple & Compound)

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 a simple probability?

Back

Simple probability refers to the likelihood of a single event occurring, calculated as the number of favorable outcomes divided by the total number of possible outcomes.

Front

What is a compound probability?

Back

Compound probability refers to the likelihood of two or more events occurring together, which can be calculated using the multiplication or addition rules.

Front

How do you calculate the probability of drawing a green marble from Bag A?

Back

P(Green from Bag A) = Number of green marbles in Bag A / Total marbles in Bag A = 3 / (9 + 3) = 3/12 = 1/4.

Front

What is the probability of spinning a yellow, green, or blue on a spinner with 4 equal sections?

Back

If there are 3 favorable outcomes (yellow, green, blue) out of 4 total sections, P(Yellow or Green or Blue) = 3/4.

Front

What is the probability of not rolling a 2 on a single die?

Back

P(Not rolling a 2) = Number of outcomes that are not 2 / Total outcomes = 5/6.

Front

What does 'P(less than 5 and B)' mean?

Back

It represents the probability of two events occurring: rolling a number less than 5 and event B happening.

Front

How do you find the probability of two independent events occurring?

Back

For independent events, multiply their probabilities: P(A and B) = P(A) * P(B).

Front

What is the probability of choosing the letter 'm' from the word MATH and then flipping tails?

Back

P('m' and Tails) = P('m') * P(Tails) = (1/4) * (1/2) = 1/8.

Front

What is the total number of outcomes when rolling a die?

Back

The total number of outcomes when rolling a standard die is 6.