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:
| | 0.15 | 0.1 | 0.2 | 0.55 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 4 and smaller than 5? | |
[1] | There are 40 balls in a bag. This is is the probability distribution of their color:
| | 0.4 | 0.1 | 0.5 | | red | green | purple | | Color |
How many red balls were in the bag? | |
[1] |
Roll 1 6-sided die.
What is the probability of getting a number smaller than 6? | |
[1] | There are 20 balls in a bag. This is is the probability distribution of their color:
How many yellow balls were in the bag? | |
[1] |
Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.9 | 0.1 | | yellow | pink | | Color |
Probability of Type
| | 0.2 | 0.8 | | sedan | wagon | | Type |
What is the probability of a car being a yellow wagon? | |
[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:
| | 0.15 | 0.05 | 0.2 | 0.6 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 4? | |
[1] |
Flip 2 coins.
What is the probability of getting 2 tails? | |
[1] | A group of boys did a math test and here are their scores out of 5:
What is the probability of the boys to score exactly 2? | |
[2] |
Cars go by on a road, each is a different color and type.
Probability of Color
| | 1 | | | orange | green | | Color |
Probability of Type
| | 0.5 | 0.5 | | wagon | sedan | | Type |
What is the probability of a car being a orange wagon? | |
[2] | An obstacle course has 2 Fences and 1 Ditches. You have a 50% 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] |
Roll 90 6-sided dice.
How many times would you expect to get anything except 6? | |
[1] | A group of girls were timed running 100m. Here are the results:
What is the probability of the girls to run 100m in less than 15s?
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[2] |
A group of humans did a math test and here are their scores out of 5:
What fraction of the humans score exactly 5? | |
[2] | A group of boys were timed running 100m. Here are the results:
What is the probability of the boys to run 100m in exactly 15s?
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[2] |
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