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 smaller than 2? | |
[1] | A wheel has 6 sections, each a number on it from 1 to 6. If you spin an even number you win that amount of dollars, if you spin an odd number you lose.
What prize do we expect to get if we spin the wheel? | |
[1] |
A group of girls were timed running 100m. Here are the results:
What is the probability of the girls to run 100m in exactly 14s?
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[2] | You roll a 5 sided die and a 6 sided die.
What is the probability of getting 1 on both dice? | |
[1] |
A bag has 7 balls with number 7 and 3 balls with a number 1. You take out 1 ball.
What is the probability of getting the ball with the number 7? | |
[1] | You roll 2 3-sided dice
You add the two numbers. What is the probability of getting more than or equal to 2? | |
[1] |
Roll 12 6-sided dice.
How many times would you expect to get less than 4? | |
[1] | There are 100 balls in a bag. This is is the probability distribution of their color:
| | 0.1 | 0.4 | 0.5 | | blue | green | yellow | | Color |
If you choose a random ball from the bag, what is the probability of it being green? | |
[1] |
There are 60 balls in a bag. This is is the probability distribution of their color:
How many blue balls were in the bag? | |
[1] | A group of people were timed running 100m. Here are the results:
What fraction of the people run 100m in exactly 13s?
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[2] |
A bag has 7 red balls, 3 blue balls and 10 yellow balls. You take out a red ball, then a yellow ball, then another ball.
What is the probability of getting yellow for the last ball? | |
[1] | There are 40 balls in a bag. This is is the probability distribution of their color:
| | 0.1 | 0.5 | 0.4 | | red | purple | orange | | Color |
How many orange balls were in the bag? | |
[1] |
A group of boys were timed running 100m. Here are the results:
What fraction of the boys run 100m in exactly 15s?
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[2] | We asked a group of people how many Icecreams they eat in a day. Here are the results:
What fraction of the people eat exactly 3 Icecreams in a day? | |
[2] |
An obstacle course has 1 Fences and 2 Ditches. You have a 80% 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 36 6-sided dice.
How many times would you expect to get more than 3? | |
[1] |
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