There are 50 balls in a bag. This is is the probability distribution of their color:
| | 0.8 | 0.1 | 0.1 | | green | red | yellow | | Color |
If you choose a random ball from the bag, what is the probability of it not being green or red? | |
[1] | A group of dogs were timed running 100m. Here are the results:
What is the probability of the dogs to run 100m in exactly 16s?
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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:
| | 0.25 | 0.2 | | 0.25 | 0.3 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number from 4 to 5? | |
[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] |
A group of girls were timed running 100m. Here are the results:
What fraction of the girls run 100m in less than 13s?
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[2] | | You shoot an arrow at a target. There is a 50% chance of scoring a 20, a 40% chance of scoring a 50, or you might miss completely and score 0. What average score do you expect to get if you do this many times? | |
[1] |
You flip a coin and roll a 6 sided die.
What is the probability of getting a number more than 5 and a tail? | |
[1] | A group of humans did a math test and here are their scores out of 5:
What is the probability of the humans to score more than 5? | |
[2] |
There are 40 balls in a bag. This is is the probability distribution of their color:
| | 0.1 | 0.4 | 0.5 | | purple | red | orange | | Color |
If you choose a random ball from the bag, what is the probability of it not being red or orange? | |
[1] | A wheel has 12 sections, each has a reward in dollars, from $1 through to $12.
What prize do we expect to get if we spin the wheel? | |
[1] |
Flip a coin 18 times.
Each time a Tail comes up you win $2. How much money would you expect to make altogether? | |
[1] | The weather forecast says that the chances of rain are 30%. Your chance of being outside today is 40%. The chance of remembering your umbrella is 60%.
What is the probability of getting wet today? | |
[1] |
There are 30 balls in a bag. This is is the probability distribution of their color:
| | 0.2 | 0.5 | 0.3 | | pink | purple | green | | Color |
How many purple 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 5 and a head? | |
[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:
| | 0.25 | 0.1 | 0.1 | 0.2 | 0.35 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 4 or smaller than 5? | |
[1] | There are 100 balls in a bag. This is is the probability distribution of their color:
| | 0.4 | 0.6 | | pink | yellow | blue | | Color |
How many blue balls were in the bag? | |
[1] |
| You shoot an arrow at a target. There is a 20% chance of scoring a 10 and a 20% chance of scoring a 40 and a 60% chance of scoring a 60. What average score do you expect to get if you do this many times? | |
[1] |