You flip a coin and roll a 6 sided die.
What is the probability of getting a number more than 2 and a head? | |
[1] | A group of kids were timed running 100m. Here are the results:
What fraction of the kids run 100m in less than 13s?
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[2] |
You roll 2 3-sided dice
You add the two numbers. What is the probability of getting more than or equal to 5? | |
[1] | | You shoot an arrow at a target. There is a 20% chance of scoring a 20 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] |
A group of kids were timed running 100m. Here are the results:
What is the probability of the kids to run 100m in exactly 15s?
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[2] | | You shoot an arrow at a target. There is a 20% chance of scoring a 10 and a 40% chance of scoring a 40 and a 40% chance of scoring a 60. What average score do you expect to get if you do this many times? | |
[1] |
Roll 114 6-sided dice.
How many times would you expect to get less than or equal to 1? | |
[1] | There are 80 balls in a bag. This is is the probability distribution of their color:
| | 0.5 | 0.1 | 0.4 | | blue | yellow | 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 10 balls in a bag. This is is the probability distribution of their color:
| | 0.4 | 0.3 | 0.3 | | pink | green | blue | | Color |
If you choose a random ball from the bag, what is the probability of it not being pink? | |
[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:
| | 0.05 | 0.2 | 0.2 | 0.25 | 0.3 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling 2 or 4? | |
[1] |
Roll 6 6-sided dice.
How many times would you expect to get anything except 3? | |
[1] | Roll 126 6-sided dice.
How many times would you expect to get less than or equal to 6? | |
[1] |
Roll 4 6-sided dice.
What is the probability of getting 4 numbers that are less than 5? | |
[1] | A bag has 2 balls with numbers from 3 to 4. You take out 1 ball.
What is the probability of NOT getting the ball with the number 4? | |
[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 17s?
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[2] | There are 70 balls in a bag. This is is the probability distribution of their color:
| | 0.2 | 0.3 | 0.5 | | blue | orange | green | | Color |
If you choose a random ball from the bag, what is the probability of it being green? | |
[1] |
| A bag has 8 balls with number 4 and 9 balls with a number 2. What will be the average of the numbers of the balls taken out of the bag | |
[1] |