A bag has 9 red balls and 8 blue balls. You take out a blue ball, then a blue ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] | You flip a coin and roll a 6 sided die.
What is the probability of getting a 2 or a 2 and a head or a tail? | |
[1] |
Roll 72 6-sided dice.
How many times would you expect to get an odd number? | |
[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 smaller 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:
What is the probability of rolling a number from 4 to 5? | |
[1] | A bag has 7 balls with number 5 and 3 balls with a number 2. You take out 1 ball.
What is the probability of getting the ball with the number 5? | |
[1] |
Roll 2 6-sided dice.
What is the probability of getting a 4 on both dice? | |
[1] | There are 90 balls in a bag. This is is the probability distribution of their color:
| | 0.3 | | 0.7 | | orange | pink | green | | Color |
If you choose a random ball from the bag, what is the probability of it being orange or pink? | |
[1] |
There are 60 balls in a bag. This is is the probability distribution of their color:
| | 0.5 | 0.3 | 0.2 | | blue | pink | red | | Color |
How many pink 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:
| | 0.55 | 0.25 | 0.05 | | 0.15 | | 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 2 pink sections and 7 blue sections.
What is the probability of getting pink? | |
[1] | Roll 4 6-sided dice.
What is the probability of getting 4 numbers that are odd? | |
[1] |
Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.6 | 0.4 | | pink | orange | | Color |
Probability of Type
| | 1 | | | wagon | sedan | | Type |
What is the probability of a car being a orange wagon? | |
[2] | A group of kids were timed running 100m. Here are the results:
What is the probability of the kids to run 100m in exactly 14s?
| |
[2] |
A group of kids did a math test and here are their scores out of 5:
What fraction of the kids score exactly 0? | |
[2] | A bag has 10 red balls and 10 blue balls. You take out a red ball, then a blue ball, then another ball.
What is the probability of getting blue for the last ball? | |
[1] |
| A bag has 2 balls with number 1 and 3 balls with a number 5. What will be the average of the numbers of the balls taken out of the bag | |
[1] |