A bag has 6 red balls and 3 blue balls. You take out 1 red ball, then another ball.
What is the probability of getting red for the second ball? | |
[1] | Flip 2 coins.
What is the probability of getting a head and a tail? | |
[1] |
We asked a group of humans how many Pillows they eat in a day. Here are the results:
What is the probability of the humans to eat exactly 0 Pillows in a day? | |
[2] | There are 70 balls in a bag. This is is the probability distribution of their color:
| | 0.2 | 0.5 | 0.3 | | yellow | orange | pink | | Color |
If you choose a random ball from the bag, what is the probability of it being pink or orange? | |
[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 | 0.25 | | 0.25 | 0.35 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is smaller than 3? | |
[1] | A group of people were timed running 100m. Here are the results:
people
| |
| Time | 13 | 2 | | 14 | 1 | | 15 | 4 | | 16 | 5 | | 17 | 5 |
What is the probability of the people to run 100m in more than 17s?
| |
[2] |
The chances of feeling like icecream are 50%. The chances of being near an icecream store are 80%. There is a 10% chance that you lost all your money.
What is the probability of having icecream? | |
[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:
| | 0.6 | 0.15 | | 0.2 | 0.05 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is smaller than 3? | |
[1] |
A bag has 7 balls with numbers from 1 to 7. You take out 1 ball.
What is the probability of NOT getting the ball with the number 3? | |
[1] | A group of girls did a math test and here are their scores out of 5:
What fraction of the girls score exactly 2? | |
[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:
| | 0.6 | 0.2 | 0.15 | | 0.05 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is smaller than or equal to 4? | |
[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] |
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 | | 0.25 | 0.5 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number from 1 to 2? | |
[1] | There are 70 balls in a bag. This is is the probability distribution of their color:
| | 0.4 | 0.4 | 0.2 | | orange | red | blue | | Color |
If you choose a random ball from the bag, what is the probability of it being orange? | |
[1] |
Flip a coin 16 times.
Each time a head comes up you win $3 and with each tail you lose $2. How much money would you expect to make altogether? | |
[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:
| | 0.6 | 0.2 | 0.05 | | 0.15 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling 3 or 4? | |
[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 4? | |
[1] |