A wheel has 5 pink sections and 4 yellow sections.
What is the probability of getting pink? | |
[1] | A bag has 6 red balls, 4 blue balls and 10 yellow balls. You take out a yellow ball, then a red ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] |
A bag has 10 red balls, 2 green balls and 9 blue balls. You take out 1 ball.
What is the probability of NOT getting a red ball? | |
[1] | A group of people did a math test and here are their scores out of 5:
What fraction of the people score exactly 3? | |
[2] |
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] | There are 90 balls in a bag. This is is the probability distribution of their color:
| | 0.4 | 0.5 | 0.1 | | pink | red | green | | Color |
How many green balls were in the bag? | |
[1] |
Flip a coin 2 times.
Each time a Head comes up you win $2. How much money would you expect to make altogether? | |
[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:
| | 0.55 | | 0.2 | 0.2 | 0.05 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 5 and smaller than 3? | |
[1] |
| You shoot an arrow at a target. There is a 50% chance of scoring a 30 and a 50% chance of scoring a 40. What average score do you expect to get if you do this many times? | |
[1] | A group of kids were timed running 100m. Here are the results:
What is the probability of the kids to run 100m in exactly 17s?
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[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:
What is the probability of rolling a number from 2 to 4? | |
[1] | An obstacle course has 2 Fences and 1 Ditches. You have a 90% chance of clearing a Fence and a 100% chance of clearing a Ditch.
What is the probability of having a perfect run (clearing everything)? | |
[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:
What is the probability of rolling a number from 3 to 4? | |
[1] | We asked a group of people how many Pillows they eat in a month. Here are the results:
What is the probability of the people to eat exactly 1 Pillows in a month? | |
[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:
What is the probability of rolling a number that is bigger than 2? | |
[1] | An obstacle course has 1 Fences and 2 Ditches. You have a 90% chance of clearing a Fence and a 80% chance of clearing a Ditch.
What is the probability of having a perfect run (clearing everything)? | |
[1] |
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