A bag has 3 red balls, 2 blue balls and 2 yellow balls. You take out a blue ball, then a red ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] | You roll a 5 sided die and a 8 sided die.
What is the probability of getting 1 on both dice? | |
[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:
| | 0.2 | 0.05 | 0.2 | 0.55 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is smaller than 2? | |
[1] | You flip a coin and roll a 6 sided die.
What is the probability of getting a 5 or a 5 and a tail? | |
[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 3 or 5? | |
[1] | There are 60 balls in a bag. This is is the probability distribution of their color:
| | 0.6 | 0.3 | 0.1 | | purple | yellow | blue | | Color |
If you choose a random ball from the bag, what is the probability of it not being blue? | |
[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 4 Hot dogs in a day? | |
[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:
What is the probability of rolling a number that is bigger than 4? | |
[1] |
The weather forecast says that the chances of rain are 30%. Your chance of being outside today is 60%. You flip a coin to decide whether to take your umbrella.
What is the probability of getting wet today? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.3 | 0.7 | | purple | pink | | Color |
Probability of Type
| | 0.4 | 0.6 | | sedan | wagon | | Type |
What is the probability of a car being a pink wagon? | |
[2] |
There are 80 balls in a bag. This is is the probability distribution of their color:
| | 0.5 | 0.1 | 0.4 | | orange | green | pink | | Color |
If you choose a random ball from the bag, what is the probability of it not being green or orange? | |
[1] | There are 70 balls in a bag. This is is the probability distribution of their color:
If you choose a random ball from the bag, what is the probability of it not being red? | |
[1] |
A bag has 7 balls with numbers from 5 to 11. You take out 1 ball.
What is the probability of NOT getting the ball with the number 11? | |
[1] | The chances of feeling like icecream are 70%. The chances of being near an icecream store are 90%. There is a 30% chance that you lost all your money.
What is the probability of having icecream? | |
[1] |
There are 60 balls in a bag. This is is the probability distribution of their color:
| | 0.2 | 0.4 | 0.4 | | purple | red | pink | | Color |
If you choose a random ball from the bag, what is the probability of it being red? | |
[1] | You roll a 4 sided die and a 3 sided die.
What is the probability of getting 2 on both dice? | |
[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 or equal to 3? | |
[1] | Flip a coin 14 times.
Each time a head comes up you win $1 and with each tail you lose $3. It costs $27 to play (paid once). How much money would you expect to make altogether? | |
[1] |
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