There are 80 balls in a bag. This is is the probability distribution of their color:
How many pink balls were in the bag? | |
[1] | You flip a coin and roll a 6 sided die.
What is the probability of getting a number equal to 6 and a tail? | |
[1] |
There are 20 balls in a bag. This is is the probability distribution of their color:
| | 0.3 | 0.1 | 0.6 | | orange | yellow | purple | | Color |
How many purple balls were in the bag? | |
[1] | A group of people were timed running 100m. Here are the results:
| Time | people | | 13 | 4 | | 14 | 4 | | 15 | 1 | | 16 | 1 | | 17 | 3 |
What fraction of the people run 100m in less than 15s?
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[2] |
There are 44 balls in a bag. This is is the probability distribution of their color:
| | 0.25 | 0.75 | | orange | purple | | Color |
How many orange balls were in the bag? | |
[1] | There are 30 balls in a bag. This is is the probability distribution of their color:
| | 0.5 | 0.4 | 0.1 | | yellow | green | red | | Color |
How many yellow balls were in the bag? | |
[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:
| | 0.8 | 0.1 | | 0.05 | 0.05 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number from 1 to 2? | |
[1] | There are 60 balls in a bag. This is is the probability distribution of their color:
| | 0.3 | 0.5 | 0.2 | | yellow | pink | blue | | Color |
How many blue balls were in the bag? | |
[1] |
You roll 2 3-sided dice
You add the two numbers. What is the probability of getting more than or equal to 3? | |
[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:
| | 0.5 | | 0.2 | 0.05 | 0.25 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than or equal to 1? | |
[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 that is bigger than 5 and smaller than 4? | |
[1] | There are 100 balls in a bag. This is is the probability distribution of their color:
| | 0.2 | 0.4 | 0.4 | | green | pink | purple | | Color |
If you choose a random ball from the bag, what is the probability of it being green or pink? | |
[1] |
| You shoot an arrow at a target. You will either score 10 (20% chance), 30 (40% chance), or 60. What average score do you expect to get if you do this many times? | |
[1] | A group of boys were timed running 100m. Here are the results:
What is the probability of the boys to run 100m in less than 15s?
| |
[2] |
A bag has 9 red balls, 4 green balls and 10 blue balls. You take out 1 ball.
What is the probability of getting a blue ball or a green ball? | |
[1] | You roll a 8 sided die and a 7 sided die.
What is the probability of getting 7 on both dice? | |
[1] |
A bag has 6 balls with number 9 and 3 balls with a number 4. You take out 1 ball.
What is the probability of getting the ball with the number 9? | |
[1] | There are 100 balls in a bag. This is is the probability distribution of their color:
| | 0.5 | 0.5 | | | purple | green | orange | | Color |
If you choose a random ball from the bag, what is the probability of it not being green or purple? | |
[1] |
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