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 | 0.2 | 0.15 | 0.1 | 0.35 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a 2? | |
[1] | A wheel has 8 sections, each has a reward in dollars, from $1 through to $8.
What prize do we expect to get if we spin the wheel? | |
[1] |
Flip 7 coins.
What is the probability of getting 7 heads? | |
[1] | A bag has 9 red balls, 7 blue balls and 2 yellow balls. You take out a blue ball, then a yellow ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] |
We asked a group of dogs how many Chocolates they eat in a week. Here are the results:
What fraction of the dogs eat less than 4 Chocolates in a week? | |
[2] | An obstacle course has 2 Fences and 1 Ditches. You have a 100% chance of clearing a Fence and a 100% chance of clearing a Ditch.
What is the probability of having a perfect run (clearing everything)? | |
[1] |
Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.5 | 0.5 | | purple | orange | | Color |
Probability of Type
| | 0.8 | 0.2 | | sedan | wagon | | Type |
What is the probability of a car being a orange sedan? | |
[2] | A bag has 4 balls with numbers from 5 to 8. You take out 1 ball.
What is the probability of getting a ball with an even number? | |
[1] |
There are 10 balls in a bag. This is is the probability distribution of their color:
How many green balls were in the bag? | |
[1] | Roll 48 6-sided dice.
How many times would you expect to get more than 4? | |
[1] |
A group of people did a math test and here are their scores out of 5:
What fraction of the people score less than 4? | |
[2] | A bag has 5 balls with numbers from 1 to 5. You take out 1 ball.
What is the probability of NOT getting the ball with the number 6? | |
[1] |
A bag has 10 red balls, 3 blue balls and 5 yellow balls. You take out a red ball, then a yellow ball, then another ball.
What is the probability of getting blue for the last ball? | |
[1] | We asked a group of people how many Strawberries they eat in a month. Here are the results:
| Strawberries | people | | 0 | 2 | | 1 | 0 | | 2 | 3 | | 3 | 3 |
What is the probability of the people to eat more than 4 Strawberries in a month? | |
[2] |
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] | | You shoot an arrow at a target. You will either score 20 (40% chance), 30 (20% chance), or 50. What average score do you expect to get if you do this many times? | |
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