A bag has 6 red balls, 2 blue balls and 10 yellow balls. You take out a blue ball, then a yellow ball, then another ball. What is the probability of getting blue for the last ball? | |
[1] | A group of humans did a math test and here are their scores out of 5:
What fraction of the humans score less than 1? | |
[2] |
You flip a coin and roll a 6 sided die. What is the probability of getting a number less than 5 and a tail? | |
[1] | There are 10 balls in a bag. This is is the probability distribution of their color:
How many red balls were in the bag? | |
[1] |
A group of people were timed running 100m. Here are the results:
people
| |
| Time | 13 | 2 | | 14 | 3 | | 15 | 4 | | 16 | 2 | | 17 | 6 |
What fraction of the people run 100m in less than 16s?
| |
[2] | A group of kids were timed running 100m. Here are the results:
What fraction of the kids run 100m in more than 17s?
| |
[2] |
A group of people were timed running 100m. Here are the results:
people
| | 4 | 3 | 4 | 5 | 2 | | 13 | 14 | 15 | 16 | 17 | | Time |
What fraction of the people run 100m in less than 16s?
| |
[2] | Roll 144 6-sided dice. How many times would you expect to get more than or equal to 5? | |
[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 2? | |
[1] | A bag has 4 red balls, 6 blue balls and 6 yellow balls. You take out a red ball, then a yellow ball, then another ball. What is the probability of getting blue for the last ball? | |
[1] |
A bag has 7 balls with numbers from 4 to 10. You take out 1 ball. What is the probability of NOT getting a ball with a number more than 5? | |
[1] | We asked a group of people how many Popsicles they eat in a month. Here are the results:
What is the probability of the people to eat less than 3 Popsicles in a month? | |
[2] |
Roll 102 6-sided dice. How many times would you expect to get less than 5? | |
[1] | A bag has 6 balls with numbers from 2 to 7. You take out 1 ball. What is the probability of getting a ball with a number more than 6? | |
[1] |
There are 90 balls in a bag. This is is the probability distribution of their color:
| | 0.2 | | 0.8 | | red | green | yellow | | Color |
How many red balls were in the bag? | |
[1] |