A bag has 6 red balls and 8 blue balls. You take out 1 red ball, then another ball.
What is the probability of getting blue for the second ball? | |
[1] | Roll 108 6-sided dice.
How many times would you expect to get less than 1? | |
[1] |
A bag has 2 balls with numbers from 3 to 4. You take out 1 ball.
What is the probability of NOT getting a ball with a number more than 4? | |
[1] | | You shoot an arrow at a target. You will either score 20 (50% chance), 30 (40% chance), or 50. What average score do you expect to get if you do this many times? | |
[1] |
A group of girls did a math test and here are their scores out of 5:
What is the probability of the girls to 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:
| | 0.1 | 0.15 | 0.2 | 0.2 | 0.35 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a 4? | |
[1] |
We asked a group of people how many Oranges they eat in a month. Here are the results:
What is the probability of the people to eat exactly 3 Oranges in a month? | |
[2] | A group of girls were timed running 100m. Here are the results:
What is the probability of the girls to run 100m in more than 15s?
| |
[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:
What is the probability of rolling a 1? | |
[1] | Flip a coin 10 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] |
You flip a coin and roll a 6 sided die.
What is the probability of getting a number equal to 5 and a tail? | |
[1] | A group of boys did a math test and here are their scores out of 5:
What is the probability of the boys to score less than 4? | |
[2] |
There are 30 balls in a bag. This is is the probability distribution of their color:
| | 0.6 | 0.3 | 0.1 | | yellow | blue | green | | Color |
If you choose a random ball from the bag, what is the probability of it not being blue or yellow? | |
[1] | There are 90 balls in a bag. This is is the probability distribution of their color:
| | 0.4 | 0.2 | 0.4 | | orange | pink | green | | Color |
If you choose a random ball from the bag, what is the probability of it not being orange? | |
[1] |
We asked a group of girls how many Apples they eat in a week. Here are the results:
What fraction of the girls eat less than 3 Apples in a week? | |
[2] |