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 | | 0.1 | 0.15 | 0.55 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is smaller than or equal to 4? | |
[1] | A group of humans did a math test and here are their scores out of 5:
What fraction of the humans score more than 5? | |
[2] |
A bag has 11 balls with numbers from 2 to 12. You take out 1 ball.
What is the probability of NOT getting the ball with the number 6? | |
[1] | Roll 12 6-sided dice.
How many times would you expect to get an even number? | |
[1] |
| You shoot an arrow at a target. You will either score 10 (50% chance), 40 (10% chance), or 50. What average score do you expect to get if you do this many times? | |
[1] | Flip a coin 12 times.
Each time a head comes up you win $4 and with each tail you lose $4. How much money would you expect to make altogether? | |
[1] |
You flip a coin and roll a 6 sided die.
What is the probability of getting a 4 and a tail? | |
[1] | An obstacle course has 2 Fences and 1 Ditches. You have a 80% 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] |
We asked a group of girls how many Pillows they eat in a month. Here are the results:
What fraction of the girls eat exactly 4 Pillows in a month? | |
[2] | A bag has 7 balls with numbers from 1 to 7. You take out 1 ball.
What is the probability of NOT getting a ball with a number less than 5? | |
[1] |
A bag has 8 balls with numbers from 4 to 11. You take out 1 ball.
What is the probability of NOT getting a ball with a number less than 3? | |
[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:
| | 0.05 | | 0.25 | 0.2 | 0.5 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling 2 or 3? | |
[1] |
We asked a group of humans how many Apples they eat in a week. Here are the results:
What fraction of the humans eat exactly 4 Apples in a week? | |
[2] | A bag has 5 balls with numbers from 4 to 8. You take out 1 ball.
What is the probability of NOT getting the ball with the number 9? | |
[1] |
Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.1 | 0.9 | | blue | orange | | Color |
Probability of Type
| | 0.5 | 0.5 | | wagon | sedan | | Type |
What is the probability of a car being a orange sedan? | |
[2] | | A bag has 7 balls with number 6 and 8 balls with a number 5. What will be the average of the numbers of the balls taken out of the bag | |
[1] |
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