There are 2 balls in a bag. This is is the probability distribution of their color:
How many blue balls were in the bag? | |
[1] | | You shoot an arrow at a target. There is a 20% chance of scoring a 10 and a 10% chance of scoring a 30 and a 70% chance of scoring a 60. What average score do you expect to get if you do this many times? | |
[1] |
There are 25 balls in a bag. This is is the probability distribution of their color:
How many yellow 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 from 2 to 3? | |
[1] |
A group of kids were timed running 100m. Here are the results:
What fraction of the kids run 100m in more than 13s?
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[2] | A group of girls did a math test and here are their scores out of 5:
What fraction of the girls score exactly 5? | |
[2] |
You flip a coin and roll a 6 sided die.
What is the probability of getting a 1 or a 4 and a head? | |
[1] | A bag has 5 red balls, 10 green balls and 2 blue balls. You take out 1 ball.
What is the probability of getting a blue ball or a red ball? | |
[1] |
A wheel has 6 red sections and 2 green sections.
What is the probability of getting red? | |
[1] | A group of humans were timed running 100m. Here are the results:
| Time | humans | | 13 | 5 | | 14 | 5 | | 15 | 3 | | 16 | 0 | | 17 | 0 |
What is the probability of the humans to run 100m in more than 17s?
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[2] |
A bag has 9 balls with numbers from 4 to 12. You take out 1 ball.
What is the probability of NOT getting the ball with the number 11? | |
[1] | | You shoot an arrow at a target. You will either score 20 (30% chance), 30 (10% chance), or 60. What average score do you expect to get if you do this many times? | |
[1] |
The weather forecast says that the chances of rain are 30%. Your chance of being outside today is 60%. The chance of remembering your umbrella is 70%.
What is the probability of getting wet today? | |
[1] | You roll a 9 sided die and a 7 sided die.
What is the probability of getting 1 on both dice? | |
[1] |
There are 10 balls in a bag. This is is the probability distribution of their color:
| | 0.3 | 0.3 | 0.4 | | blue | yellow | purple | | Color |
If you choose a random ball from the bag, what is the probability of it not being purple? | |
[1] | A bag has 8 balls with numbers from 5 to 12. You take out 1 ball.
What is the probability of NOT getting a ball with a number more than 9? | |
[1] |
| A bag has 3 balls with number 2 and 8 balls with a number 8. What will be the average of the numbers of the balls taken out of the bag | |
[1] |