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] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.8 | 0.2 | | red | yellow | | Color |
Probability of Type
| | 0.1 | 0.9 | | wagon | sedan | | Type |
What is the probability of a car being a yellow sedan? | |
[2] |
A group of people did a math test and here are their scores out of 5:
What fraction of the people score more than 4? | |
[2] | A bag has 7 red balls, 7 green balls and 6 blue balls. You take out 1 ball.
What is the probability of getting a blue ball or a red ball? | |
[1] |
Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.6 | 0.4 | | yellow | purple | | Color |
Probability of Type
| | 0.8 | 0.2 | | sedan | wagon | | Type |
What is the probability of a car being a purple wagon? | |
[2] | There are 90 balls in a bag. This is is the probability distribution of their color:
How many orange balls were in the bag? | |
[1] |
Roll 2 6-sided dice.
You add the two numbers. What is the probability of getting 2? | |
[1] | Flip a coin 16 times.
Each time a head comes up you win $1 and with each tail you lose $2. How much money would you expect to make altogether? | |
[1] |
There are 10 balls in a bag. This is is the probability distribution of their color:
| | 0.1 | 0.4 | 0.5 | | green | red | pink | | Color |
If you choose a random ball from the bag, what is the probability of it not being green or red? | |
[1] | We asked a group of kids how many Hot dogs they eat in a day. Here are the results:
What fraction of the kids eat more than 0 Hot dogs in a day? | |
[2] |
A bag has 6 balls with numbers from 2 to 7. You take out 1 ball.
What is the probability of NOT getting a ball with a number more than 4? | |
[1] | A bag has 9 red balls and 3 blue balls. You take out a red ball, then a red ball, then another ball.
What is the probability of getting blue for the last ball? | |
[1] |
A bag has 4 red balls and 2 blue balls. You take out 1 ball.
What is the probability of getting a blue ball? | |
[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 | | 0.15 | 0.2 | 0.4 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling 2 or 3? | |
[1] |
Roll 132 6-sided dice.
How many times would you expect to get more than 3? | |
[1] | A bag has 8 red balls, 4 blue balls and 6 yellow balls. You take out a blue ball, then a yellow ball, then another ball.
What is the probability of getting yellow for the last ball? | |
[1] |
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