Probability flashcard

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

If a jar contains 2 pink, 6 red, and 4 blue marbles, how many marbles are there in total?

Back

There are 12 marbles in total (2 + 6 + 4 = 12).

Front

What is the formula to calculate the probability of an event?

Back

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

Front

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

Back

The probability of getting heads is 1/2.

Front

What is the probability of rolling a 3 on a standard six-sided die?

Back

The probability of rolling a 3 is 1/6.

Front

What does P(not A) represent in probability?

Back

P(not A) represents the probability that event A does not occur.

Front

If you have a 50% chance of winning a game, what is the probability expressed as a fraction?

Back

The probability is 1/2.

Front

What is the probability of drawing a red marble from a jar with 6 red marbles out of 12 total marbles?

Back

The probability is 6/12 or 1/2.