Multiplication and Addition Probability rules

Front

What is the probability of rolling an even number on a single die?

Back

The probability of rolling an even number (2, 4, or 6) is 3/6 or 1/2.

Front

What is the probability of rolling a multiple of 3 on a single die?

Back

The probability of rolling a multiple of 3 (3 or 6) is 2/6 or 1/3.

Front

Are the events of rolling an even number and rolling a multiple of 3 mutually exclusive?

Back

No, they are not mutually exclusive because the number 6 is both even and a multiple of 3.

Front

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

Back

The probability of drawing a spade is 13/52 or 1/4.

Front

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

Back

The probability of drawing a red card (hearts or diamonds) is 26/52 or 1/2.

Front

Are the events of drawing a spade and drawing a red card mutually exclusive?

Back

Yes, they are mutually exclusive because a card cannot be both a spade and red.

Front

What is the total number of marbles in a bag containing 9 green, 5 yellow, and 6 red marbles?

Back

The total number of marbles is 9 + 5 + 6 = 20.

Front

What is the probability of selecting a green or red marble from the bag?

Back

The probability of selecting a green or red marble is (9 green + 6 red) / 20 = 15/20 = 3/4.

Front

What does P(A) represent in probability?

Back

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

Front

What does P(B|A) represent in probability?

Back

P(B|A) represents the probability of event B occurring given that event A has occurred.