A bag has 3 balls with numbers from 3 to 5. You take out 1 ball.
What is the probability of NOT getting the ball with the number 6? | |
[1] | There are 100 balls in a bag. This is is the probability distribution of their color:
| | 0.1 | 0.4 | 0.5 | | purple | blue | red | | Color |
How many purple balls were in the bag? | |
[1] |
A group of people were timed running 100m. Here are the results:
| Time | people | | 13 | 2 | | 14 | 4 | | 15 | 2 | | 16 | 6 | | 17 | 6 |
What fraction of the people run 100m in exactly 13s?
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[2] | There are 10 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 fraction of the boys run 100m in exactly 13s?
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[2] | Flip 7 coins.
What is the probability of getting 7 heads? | |
[1] |
| You shoot an arrow at a target. There is a 60% chance of scoring a 20 and a 40% chance of scoring a 50. What average score do you expect to get if you do this many times? | |
[1] | A wheel has 2 sections, 2 of each color.
What is the probability of getting red? | |
[1] |
There are 60 balls in a bag. This is is the probability distribution of their color:
If you choose a random ball from the bag, what is the probability of it not being red or 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 | 0.05 | 0.15 | 0.2 | 0.55 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling 2 or 3? | |
[1] |
Flip 1 coin.
What is the probability of getting a tail? | |
[1] | Roll 1 6-sided die.
What is the probability of getting a number bigger than 3? | |
[1] |
Flip a coin 16 times.
Each time a Head comes up you win $1. How much money would you expect to make altogether? | |
[1] | We asked a group of kids how many Bananas they eat in a month. Here are the results:
What fraction of the kids eat less than 4 Bananas in a month? | |
[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:
| | 0.2 | 0.05 | 0.2 | 0.55 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is smaller than 4? | |
[1] | Roll 54 6-sided dice.
How many times would you expect to get a number more than 3? | |
[1] |
There are 50 balls in a bag. This is is the probability distribution of their color:
| | 0.9 | | 0.1 | | yellow | green | purple | | Color |
If you choose a random ball from the bag, what is the probability of it not being green or purple? | |
[1] |