Roll 4 6-sided dice.
What is the probability of getting 4 numbers that are less than 5? | |
[1] | Flip a coin 2 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 roll 2 3-sided dice
You add the two numbers. What is the probability of getting less than or equal to 2? | |
[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:
| | 0.1 | | 0.1 | 0.25 | 0.55 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number from 1 to 5? | |
[1] |
A group of kids were timed running 100m. Here are the results:
What is the probability of the kids to run 100m in exactly 15s?
| |
[2] | You flip a coin and roll a 8 sided die.
What is the probability of getting a 1 and a head? | |
[1] |
A bag has 7 balls with numbers from 3 to 9. You take out 1 ball.
What is the probability of getting a ball with a number more than 9? | |
[1] | A bag has 8 balls with numbers from 5 to 12. You take out 1 ball.
What is the probability of NOT getting a ball with a number less than 5? | |
[1] |
We asked a group of boys how many Apples they eat in a month. Here are the results:
What is the probability of the boys to eat less than 4 Apples in a month? | |
[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:
| | 0.65 | 0.05 | 0.15 | | 0.15 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling 1 or 3? | |
[1] |
Flip a coin 14 times.
Each time a Head comes up you win $4. It costs $15 to play (paid once). How much money would you expect to make altogether? | |
[1] | Flip 7 coins.
What is the probability of getting 7 heads? | |
[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:
| | 0.15 | 0.05 | 0.1 | | 0.7 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is smaller than or equal to 4? | |
[1] | | You shoot an arrow at a target. There is a 40% chance of scoring a 10, a 40% chance of scoring a 60, or you might miss completely and score 0. What average score do you expect to get if you do this many times? | |
[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:
| | 0.15 | 0.1 | 0.05 | 0.2 | 0.5 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 2? | |
[1] | Roll 132 6-sided dice.
How many times would you expect to get more than 1? | |
[1] |
A group of kids were timed running 100m. Here are the results:
What is the probability of the kids to run 100m in exactly 13s?
| |
[2] |