Dice and Coins
You roll a single die numbered from 1 to 6. What is the probability of rolling an odd number, expressed as a fraction?
1/2
In a deck of 52 playing cards, what is the probability of drawing a spade expressed as a decimal?
.25
The numbers 4 through 14 are placed in a bowl and drawn at random then replaced after being drawn. Is it likely or unlikely you will draw a number less than 7?
3/11, therefore unlikely
The denominators of your fractions when you draw an object with replacement
the same
In your wallet you have the following paper money: 7 singles, 3 fives, 2 tens and 6 twenties. What is the probability, as a percent, you will draw a 5 and then a 20?
6%
You flip a coin three times in a row. What it the probability you will get three heads?
1/8
In a deck of 52 playing cards, are the odds favorable that you will draw a heart or a diamond?
No, they are even
The letters that form the word MISSISSIPPI are placed in a bowl. What are the odds of choosing a “P”?
2/9
Denominators of your fractions when objects are drawn without replacement
Often their difference is one (ex. out of 52 and then out of 51)
There are 29 students available to represent the upperclassmen at a fair. 13 are juniors and 16 are seniors. What is the probability, as a percent that a senior and junior will be chosen?
26%
You roll a die and then flip a coin. What is the probability, as a percent, of getting an even number on the die and then a head on the coin?
25%
In a deck of 52 playing cards what is the probability, as a fraction, of drawing a picture card (A, K, Q, and J) that is also a diamond then a card numbered 2-9?
32/663
A jar contains 12 caramels, 7 mints and 16 dark chocolates. What is the probability of selecting a mint expressed as a fraction?
1/5
Favorable or likely odds
Odds greater than 50%
The letters that form the word ALGEBRA are placed in a bowl. What is the probability, as a percent, of choosing a letter other than “A” and then choosing an “A”?
24%
You roll a single die numbered from 1 to 6. Is it likely you will roll a number greater than 4 the first time and a number less than 2 the 2nd?
1/18 (Unlikely)
In a deck of 52 playing cards, what is the probability, as a fraction, of drawing either a heart or a diamond than a spade or a club if each card is returned to the deck before drawing the next one?
1/4
There is a jar of jelly beans with the following flavors: 12 are grape, 17 are blueberry, 5 are pineapple and 13 are coconut. What is the probability, expressed as a percent, of selecting either a grape or blueberry replacing it and then a coconut or pineapple?
24%
2/5 as a percent
40%
There are 15 men on the roster of the baseball team. 2 are catchers, 6 are infielders, 4 are outfielders and the remainder are pitchers. What is the probability that out of two players chosen at random they would be a pitcher and a outfielder?
3/35