Simple Probability
Compound Probability
Combinations/Trees/Games
Predictions
Review
100
In a jar of jelly beans, there are 9 red, 7 blue, 8 green and 6 yellow jelly beans. What is the probability of picking a red jelly bean in lowest terms?
9/30 = 3/10
100
What is the probability of rolling an even number on a die and then flipping heads on a coin.
1/2 * 1/2 = 1/4
100
For lunch, Mr Taylor has several sandwich choices. He has 2 choices of bread, 3 choices of meat, 2 choices of cheese and 4 choices of condiment. How many different sandwich combinations could he make?
48 combinations
100
If you roll a die 24 times, how many times would you expect to roll a 1.
P (1) = 1/6 * 24 = 4 times.
100
2.3^2
5.29
200
In a jar of jelly beans, there are 9 red, 7 blue, 8 green and 6 yellow jelly beans. What is the probability of picking a green or yellow jelly bean in lowest terms?
14/30 = 7/15
200
What is the probability of flipping heads on a coin, three times in a row?
1/2 * 1/2 * 1/2 = 1/8
200
In a coin flipping game, Mr Taylor wins if heads comes up 2 more times while flipping three coins at the same times. What is the probability of Mr Taylor winning
(HINT: Draw a tree diagram)
4/8 = 1/2
200
If you roll a die 24 times, how many times would you expect to roll an even number?
P(even) = 1/2 * 24 = 12
200
1.23 / 0.05
24.6
300
In a jar of jelly beans, there are 9 red, 7 blue, 8 green and 6 yellow jelly beans. What is the probability of picking a jelly bean that is not yellow in lowest terms?
24/30 = 4/5
300
The Red Sox are playing a double header against the Yankees. They have a 60% chance of winning the first game (Price is pitching :( )and an 80% chance of winning the second game (Sale is pitching :)). What is the probability the Red Sox win both games?
3/5 * 4/5 = 12/25
300
Mr Taylor wins a game if he rolls a die and gets a factor of 6. Otherwise, Mrs Taylor wins. Is this game fair?
No. Mr Taylor will win 2/3 of time.
300
If you roll a die 24 times, how many times would you expect to roll a number greater than 4?
P(greater than 4) = 1/3 * 24 = 8 times
300
Write 2,350,000,000,000 in scientific notation
2.35 x 10^12
400
When you roll two dice and add them together, what is the probability you will roll a 3?
2/36 = 1/18
400
What is the probability of picking a red card out of a deck of cards and the picking an ace of any color?
1/2 * 1/13 = 1/26
400
When rolling two dice and adding the results, Mr Taylor wins if he rolls a 3,6,7 or 8. Otherwise Mrs Taylor wins. Is this a fair game?
Yes. Both players win 1/2 of the time.
400
If you roll a die 100 times, how many times would you expect to roll a 1 or 3 or 4?
P (1,3,4) = 1/2 * 100 = 50 times
400
Find the volume of a rectangular prism with length of 6 in, width of 8 in and height of 2 ft.
1152 inches cubed.
500
What is the probability of selecting a 5 or Jack in a standard deck of cards?
FYI:
In a standard deck of cards, there are 52 total cards. There are four even suits (13 cards each suit): hearts (red) , diamonds (red) , spades (black) and clubs (black). In each suit there are 13 cards (2-10, Jack, Queen, King and Ace).
8/52 = 2/13
500
What is the probability of picking a diamond out of a deck of card, then rolling a 5, then flipping heads on a coin?
1/4 * 1/6 * 1/2 = 1/48
500
Mr Taylor is playing a game with two dice. If he rolls an even number and then an odd number, he wins. Otherwise, Mrs Taylor wins. Is this game fair?
No, Mr Taylor wins 1/4 of the time. Mrs Taylor wins 3/4 of the time.
500
If there are 100 students on the Oracles team, and 23/25 of them typically bring in their homework. How many students should I expect NOT to have their homework?
8
500
What inequality does the picture show?x is greater than or equal to -2.