Counting Principle
Single Probability
Compound Probability
Probability w/Replacement
Probability w/o Replacement
100
Choosing one combination from 4 watches and 5 watchbands
What is 20
100
A bag contains 5 red, 6 green and 4 blue marbles. What is the probabilty of drawing a blue.
What is 4/15
100
A spinner has 2 blue, 3 red and 3 green sections. A second spinner has one section has one A and two B sections. What is the probability of spinning a blue and an A?
What is 1/9
100
A bag contains 2 red, 8 black and 3 yellow marbles. With replacement, what is the probability of choosing a red and then a yellow?
What is 6/169
100
Two cards are seleced from a deck of cards numbered 1-10. One card is selected, it is not replaced. What is P(two odd numbers)?
What is 1/4
200
Selecting an outfit from three pairs of slacks, five shirts and 3 sweaters
What is 30
200
A bag contains 5 red, 6 green and 4 blue marbles. What is the probabilty of drawing a marble that is not green?
What is 9/15
200
If you flip a coin three times in a row, what is the probability of it landing on tails all three times
What is 1/8
200
A bag contains 2 red, 8 black and 3 yellow marbles. With replacement,w hat is the probability of choosing a red and and red?
What is 4/169
200
A bag contains 2 red, 6 black and 4 yellow marbles. What is the probability of drawing two yellow marbles if the first marble is not replaced?
What is 1/11
300
Choosing class officers from 3 presidential candidates, 4 vice presidential candidates, 2 secretarial candidates and 5 cadidates for treasure.
What is 120
300
A spinner is numbered 1-12. What is the probability of spinning a number that is not prime?
What is 1/2
300
You have an 8 sided number cube and a spinner labeled A-D. What is the probability of rolling a number that is less than 4 and a C?
What is 3/32
300
The letters from the word ARKANSAS are written on cards. If you choose two cards with replacement, what is the probability the first card is and A and the second card is an S?
What is 3/32
300
A bag contains 2 red, 6 black and 4 yellow marbles. What is the probability of drawing a black and then not a black marble if the first marble is not replaced?
What is 5/22
400
You and three friends are going to the movies. You can see a comedy, action or horror movie. There are six different movie times at three different theaters. How many ways can you and your friends see a movie?
What is 54
400
Using a standard deck of cards, what is the probability of choosing a card with a number?
What is 9/13
400
A spinner is labeled 1-7. What is the probability of that spinner landing on a 5 and on the second spin landing on a number that is not prime?
What is 2/49
400
Two cards are chosen at random from a standard deck of 52 cards. If the first cards is replaced, what is the probability that both cards were even?
What is 25/169
400
25 tickets are sold for a raffle with two prizes, You buy 2 tickets and your friend buys 3 tickets. What is the probability that you win the first prize and your friend wins the second prize?
What is 1/100
500
The ice cream store makes sundays with vanilla, chocolate, mint chocolate chip, chocolate chip, strawberry, and oreo. You can add whip cream, cherries, sprinkles, oreo, chocolate chips, nuts and hot fudge. You can eat inside or outside. How many ways can you eat a sunday?
What is 84
500
Using a standard deck of cards, what is the probability of choosing a card with a 10,J,Q,K or A?
What is 5/13
500
Suppose the probability that a new spark plug is defective is 1/24. And supposed you buy two new spark plugs for a motorcycle. What is the probability that they both of them are defective?
What is 1/576
500
A test includes several multiple choice questions, each with five choices. Suppose you don't know the answers for three of the questions, so you guess. What is the probability of getting all three questions correct?
What is 1/125
500
Two students are chosen at random from a class of 30. What is the probability that both you and your best friend are chosen?
What is 1/435
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