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:
| | 0.4 | 0.2 | 0.2 | 0.1 | 0.1 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling 3 or 5? | |
[1] | There are 4 balls in a bag. This is is the probability distribution of their color:
How many orange balls were in the bag? | |
[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 3 and smaller than 4? | |
[1] | A bag has 4 balls with number 8 and 3 balls with a number 5. You take out 1 ball.
What is the probability of getting the ball with the number 8? | |
[1] |
Flip a coin 12 times.
Each time a Head comes up you win $2. It costs $23 to play (paid once). How much money would you expect to make altogether? | |
[1] | A bag has 8 red balls and 5 blue balls. You take out 1 red ball, then another ball.
What is the probability of getting blue for the second ball? | |
[1] |
There are 20 balls in a bag. This is is the probability distribution of their color:
How many purple balls were in the bag? | |
[1] | A wheel has 14 sections, each has a reward in dollars, from $1 through to $14.
What prize do we expect to get if we spin the wheel? | |
[1] |
A bag has 6 red balls, 7 blue balls and 3 yellow balls. You take out a blue ball, then a red ball, then another ball.
What is the probability of getting blue for the last ball? | |
[1] | There are 120 balls in a bag. This is is the probability distribution of their color:
How many pink balls were in the bag? | |
[1] |
A group of boys were timed running 100m. Here are the results:
What is the probability of the boys to run 100m in less than 13s?
| |
[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:
| | 0.55 | | 0.05 | 0.15 | 0.25 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling 2 or 5? | |
[1] |
There are 12 balls in a bag. This is is the probability distribution of their color:
How many pink balls were in the bag? | |
[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 less than 2? | |
[1] |
A group of dogs did a math test and here are their scores out of 5:
What fraction of the dogs score less than 0? | |
[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 number that is smaller than or equal to 3? | |
[1] |
A group of dogs did a math test and here are their scores out of 5:
What fraction of the dogs score exactly 0? | |
[2] |