Roll 1 6-sided die.
What is the probability of getting an even number? | |
[1] | A bag has 4 red balls, 4 blue balls and 2 yellow balls. You take out a blue ball, then a blue ball, then another ball.
What is the probability of getting blue for the last ball? | |
[1] |
A group of people did a math test and here are their scores out of 5:
What fraction of the people score less than 1? | |
[2] | A Crazy Die has 5 sides, but each side has a different probability of being rolled. This is is the probability distribution of the sides being rolled:
| | 0.5 | 0.15 | 0.05 | 0.2 | 0.1 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a 1? | |
[1] |
Flip a coin 8 times.
Each time a Head comes up you win $2. How much money would you expect to make altogether? | |
[1] | There are 2 balls in a bag. This is is the probability distribution of their color:
How many green balls were in the bag? | |
[1] |
The chances of feeling like icecream are 70%. The chances of being near an icecream store are 90%. There is a 10% chance that you lost all your money.
What is the probability of having icecream? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.3 | 0.7 | | blue | green | | Color |
Probability of Type
| | 0.8 | 0.2 | | sedan | wagon | | Type |
What is the probability of a car being a green sedan? | |
[2] |
A group of people did a math test and here are their scores out of 5:
What is the probability of the people to score exactly 1? | |
[2] | A bag has 8 balls with numbers from 5 to 12. You take out 1 ball.
What is the probability of getting a ball with an odd number? | |
[1] |
There are 40 balls in a bag. This is is the probability distribution of their color:
How many yellow balls were in the bag? | |
[1] | | You shoot an arrow at a target. There is a 40% chance of scoring a 20, a 40% chance of scoring a 40, or you might miss completely and score 0. What average score do you expect to get if you do this many times? | |
[1] |
A wheel has 8 sections, each has a reward in dollars, from $1 through to $8.
What prize do we expect to get if we spin the wheel? | |
[1] | A group of dogs did a math test and here are their scores out of 5:
What is the probability of the dogs to score more than 3? | |
[2] |
You flip a coin and roll a 6 sided die.
What is the probability of getting a 6 and a head? | |
[1] | You roll 2 3-sided dice
You add the two numbers. What is the probability of getting less than or equal to 2? | |
[1] |
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