Simple 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 P(A) represent in probability?

Back

P(A) represents the probability of event A occurring.

Front

How do you calculate the probability of a single event?

Back

The probability of a single event is calculated by dividing the number of favorable outcomes by the total number of possible outcomes.

Front

What is the probability of rolling a 1 on a fair six-sided die?

Back

P(1) = 1/6.

Front

If you have a bag with 3 red balls and 5 blue balls, what is P(red)?

Back

P(red) = 3/8.

Front

What is the formula for calculating the probability of two independent events A and B occurring?

Back

P(A and B) = P(A) * P(B).

Front

What is the probability of rolling a 5 or a 6 on a fair six-sided die?

Back

P(5 or 6) = 2/6 or 1/3.

Front

If a card is drawn from a standard deck of 52 cards, what is P(heart)?

Back

P(heart) = 13/52 or 1/4.

Front

What is the probability of drawing a red 2 or a black 7 from a standard deck of cards?

Back

P(red 2 or black 7) = 4/52.

Front

How do you express the probability of an impossible event?

Back

The probability of an impossible event is expressed as 0.