Probability
Monday
1. What is the probability of spinning an odd number and a
vowel on the two spinners shown at the right?
2. What is the probability of spinning an odd number or the
color gray?
3. What is the probability of spinning an even number or a 5?
4. Without replacement, Vicki picks two cards from a standard 52-card deck. What is the
probability that she picks a queen, and then the king of hearts?
Tuesday
1. Camille wants to determine the fairness of her number cube labeled 1 - 6. To begin, Camille rolls
the number cube thirty times. Of those thirty times, she rolls a 4 ten times. Based on these results
alone, if she were to roll the cube 120 times, how many times should she expect to roll a 4?
A. 16 times
B. 20 times
C. 40 times
D. 60 times
For problems 2 and 3, one card is to be drawn of 52 cards. Find each probability.
2. P(king or a queen)
3. P(a number card or an ace)
Wednesday
1. P(2 and A)
2. P(2 and a consonant)
3. Stacey rolled a cube numbered 1 through 6 twice. What is the probability that the sum of the rolls
was 7?
4. A bag of marbles has 2 purple, 3 red, and 4 blue marbles. Three marbles are drawn without
replacement. What is the probability that a purple, a red and a blue marble are drawn in that order?
Thursday
1.On average, Marty makes 4 errors for every 50 words he types. How many errors should he
expect to make when typing 300 words?
A. 20
B. 24
C. 25
D. 30
2. A single die is tossed. What is the probability of a 2 or a 5 turning up?
3. A fair die is tossed twice. Find the probability of getting a 2, 3, or 4 on the first toss and a 2, 4,
or 6 on the second toss.
4. If there are 52 cards in a deck, what is the theoretical probability of selecting a card that does
not have a number on it?