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:
| | 0.1 | 0.15 | 0.2 | | 0.55 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than or equal to 4? | |
[1] | Roll 36 6-sided dice.
How many times would you expect to get anything except 1? | |
[1] |
A group of dogs did a math test and here are their scores out of 5:
What is the probability of the dogs to score more than 4? | |
[2] | A bag has 7 red balls, 8 green balls and 10 blue balls. You take out 1 ball.
What is the probability of NOT getting a blue ball? | |
[1] |
Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.9 | 0.1 | | purple | orange | | Color |
Probability of Type
| | 0.1 | 0.9 | | wagon | sedan | | Type |
What is the probability of a car being a purple wagon? | |
[2] | Flip a coin 18 times.
Each time a Tail comes up you win $4. It costs $27 to play (paid once). How much money would you expect to make altogether? | |
[1] |
An obstacle course has 2 Fences and 1 Ditches. You have a 50% chance of clearing a Fence and a 90% chance of clearing a Ditch.
What is the probability of having a perfect run (clearing everything)? | |
[1] | Flip a coin 12 times.
Each time a head comes up you win $4 and with each tail you lose $1. It costs $18 to play (paid once). How much money would you expect to make altogether? | |
[1] |
There are 50 balls in a bag. This is is the probability distribution of their color:
| | 0.3 | 0.7 | | blue | purple | pink | | Color |
If you choose a random ball from the bag, what is the probability of it not being purple? | |
[1] | Roll 18 6-sided dice.
How many times would you expect to get more than or equal to 1? | |
[1] |
The chances of feeling like icecream are 70%. The chances of being near an icecream store are 70%. There is a 10% chance that you lost all your money.
What is the probability of having icecream? | |
[1] | A wheel has 6 sections, each has a reward in dollars, from $1 through to $6.
What prize do we expect to get if we spin the wheel? | |
[1] |
| You shoot an arrow at a target. There is a 20% chance of scoring a 20 and a 30% chance of scoring a 40 and a 50% chance of scoring a 60. What average score do you expect to get if you do this many times? | |
[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 exactly 1 Hot dogs in a day? | |
[2] |
There are 20 balls in a bag. This is is the probability distribution of their color:
| | 0.3 | 0.5 | 0.2 | | green | red | purple | | Color |
If you choose a random ball from the bag, what is the probability of it not being red or purple? | |
[1] | A wheel has 2 blue sections and 2 green sections.
What is the probability of getting blue? | |
[1] |
A wheel has 3 red sections and 7 green sections.
What is the probability of getting green? | |
[1] |