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 is the probability of an event that is certain to happen?

Back

The probability of an event that is certain to happen is 1.

Front

What is the probability of an event that is impossible?

Back

The probability of an event that is impossible is 0.

Front

How do you calculate the probability of an event?

Back

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

Front

If there are 3 red blocks and 2 blue blocks, what is the probability of choosing a red block?

Back

P(red) = 3/(3+2) = 3/5.

Front

What is the probability of spinning a spinner with 4 equal sections and landing on one specific section?

Back

P(specific section) = 1/4.

Front

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

Back

P(yellow) = 3/(5+3+2) = 3/10.

Front

What is the probability of flipping a coin and landing on heads?

Back

P(heads) = 1/2.

Front

If a die is rolled, what is the probability of rolling a number greater than 4?

Back

P(greater than 4) = 2/6 = 1/3.

Front

What is the probability of drawing a card from a standard deck and it being a heart?

Back

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