Probability
What is the probability of rolling a 2 or a 3 on a 6-sided dice?
1/3
You roll a dice and toss a coin. What is the probability that you roll an even number on the dice and get heads on the coin?
1/4 or 25%
How many three digit numbers can be made with the digits 2, 3, and 5, if the numbers can be repeated?
27
What is the median of the following data?
4, 3, 2, 8, 6, 3, 3, 5, 2
3
What range of probabilities would be considered "unlikely"?
Greater than 0 AND less than 0.5
or
Greater than 0% AND less than 50%
You roll a dice three times. What is the probability that you get a 1 or 6 all three times?
1/27
How many possible 3 digit numbers can be made with the digits 4, 7, and 9, if each number can only be used once?
6
What is the mode of the following data?
12, 19, 23, 13, 15, 18, 19, 15, 17, 22, 25
15 and 19
You choose a card from a standard deck at random. What is the probability that you get a spade or queen?
4/13 or 30.8%
You have a bag with 3 blue marbles and 5 red marbles. You select one, put it back, then select another. What is the probability that both marbles you selected were blue?
9/64
How many 3 digit numbers can be made with the digits 2, 3, 4, 7, and 8?
60
What is the mean of the following data?
7, 10, 3, 5, 3, 8, 11, 9, 4, 6
6.6
There are 32 students in class. For lunch, 18 of them at the main option, 7 ate the fish option, 4 ate the vegetarian option, and 3 had soup and salad. What is the probability that a random student had fish or the vegetarian option? Answer as a percentage.
34.4%
You have a standard deck of cards. You draw three cards, with replacement. What is the probability that you draw three face cards?
(Face cards are Jacks, Queens, and Kings)
27/2197 or 1.23%
How many even 2 digit numbers can be made with the digits 1, 3, 4, 6, 7, and 8, if the digits can be used more than once?
18
The median of the data set is 32. What number is missing?
22, 17, 40, 29, 38, and __
35
A bag of marbles contains 3 blue, 6 red, and 10 green, and 1 purple marble. What is the probability that you randomly select a marble that is not red? Answer as a percent.
70%
You have a standard deck of cards. You draw a card, put it back, and draw another card. What is the probability that the two cards you drew were different colors?
1/2 or 50%
There are 12 students on the chess club. If you need to select two students to play each other in a match, how many possible combinations are there?
132
The data set is missing a number. If the mean, of the data is 24, what is the median?
23, 29, 17, 18, 27, 21
23