There are 16 balls in a bag. This is is the probability distribution of their color:
How many red balls were in the bag? | |
[1] | Flip a coin 16 times.
Each time a Head comes up you win $1. How much money would you expect to make altogether? | |
[1] |
There are 50 balls in a bag. This is is the probability distribution of their color:
| | 0.1 | 0.1 | 0.8 | | green | red | purple | | Color |
How many green balls were in the bag? | |
[1] | A bag has 5 red balls, 5 blue balls and 2 yellow balls. You take out a red ball, then a yellow ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] |
There are 20 balls in a bag. This is is the probability distribution of their color:
| | 0.1 | 0.9 | | green | purple | red | | Color |
How many green balls were in the bag? | |
[1] | A wheel has 6 sections, each a number on it from 1 to 6. If you spin an odd number you win that amount of dollars, if you spin an even number you lose.
What prize do we expect to get if we spin the wheel? | |
[1] |
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:
| | 0.1 | 0.05 | 0.1 | 0.05 | 0.7 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is smaller than 4? | |
[1] | A bag has 2 red balls, 8 blue balls and 3 yellow balls. You take out a yellow ball, then a yellow ball, then another ball.
What is the probability of getting yellow for the last ball? | |
[1] |
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:
| | 0.2 | 0.2 | 0.25 | 0.05 | 0.3 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a 1? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.6 | 0.4 | | blue | purple | | Color |
Probability of Type
| | 1 | | | wagon | sedan | | Type |
What is the probability of a car being a purple sedan? | |
[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:
| | 0.45 | 0.25 | 0.05 | 0.15 | 0.1 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling 2 or 4? | |
[1] | 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 less than 3? | |
[2] |
A wheel has 7 sections, each with a different reward.
What is the probability of getting a Mike & Ike? | |
[1] | A group of boys were timed running 100m. Here are the results:
What fraction of the boys run 100m in less than 17s?
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[2] |
An obstacle course has 2 Fences and 1 Ditches. You have a 100% chance of clearing a Fence and a 50% chance of clearing a Ditch.
What is the probability of having a perfect run (clearing everything)? | |
[1] | A group of girls did a math test and here are their scores out of 5:
What fraction of the girls score less than 3? | |
[2] |
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