2 outcomes (1 heads, 1 tails)
In a regular 52-card deck, what is the probability of you drawing a queen of hearts?
1/52
Define "probability of an event."
It is the measure of the likelihood that an event will occur.
You roll a regular die one time. Find the number of possible outcomes.
6
A standard dice is rolled. What is the probability that a 2, 4, OR 6 will be rolled?
3/6 or 1/2
Define "sample space."
The set of all possible outcomes.
You roll two fair dice. Find the number of possible outcomes.
6x6 or 36
In a regular 52-card deck, what is the probability of you drawing 2 cards from the same suit?
3/2652
Two fair dice are rolled. What is the probability that their sum is greater than 13?
0
Describe the difference between events that are certain, likely, equally likely, unlikely, or never going to happen.
Certain would be 100% of the time, likely is anything greater than 50% of the time, equally likely is exactly 50% of the time, unlikely is anything less than 50% of the time, and never is anything that has a 0% chance of occuring.
A clown has three purple balloons labeled a, b, and c, three yellow balloons labeled a, b, and c, and three turquoise balloons labeled a, b, and c. The clown chooses a balloon at random. Find the number of possible outcomes.
9 outcomes (3 colors x 3 labels)
Your friend has eight sweatshirts. Three sweatshirts are green, one is white, and four are blue. You forgot your sweatshirt, so your friend is going to bring one for you as well as one for himself. What is the probability that your friend will bring two blue sweatshirts?
3/14. The probability that he will bring one blue sweatshirt is 4/8 or 1/2. The probability that he will bring another blue sweatshirt is now 3/7. Multiplying 1/2 and 3/7, we get 3/14.
You draw two cards from a regular 52-card deck. What is the probability that you draw an ace of diamonds and the other card is not a spade?
47/2652
There are 3 red marbles, 2 green marbles, and 1 yellow marble in a box. One marble is taken out and not replaced. A second marble is then taken out and not replaced. What is the probability both marbles that were taken out are red?
1/5
Two fair dice are rolled. What is the probability that their sum is greater than 4?
30/36 or 5/6.