There are 40 balls in a bag. This is is the probability distribution of their color:
| | 0.5 | 0.4 | 0.1 | | blue | purple | orange | | Color |
How many orange balls were in the bag? | |
[1] | A bag has 6 red balls, 6 green balls and 2 blue balls. You take out 1 ball.
What is the probability of getting a green ball or a blue ball? | |
[1] |
| You shoot an arrow at a target. There is a 60% chance of scoring a 30 and a 40% chance of scoring a 40. What average score do you expect to get if you do this many times? | |
[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 | 0.05 | 0.2 | 0.2 | | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number from 4 to 5? | |
[1] |
There are 40 balls in a bag. This is is the probability distribution of their color:
| | 0.4 | 0.1 | 0.5 | | pink | blue | green | | Color |
If you choose a random ball from the bag, what is the probability of it being pink or blue? | |
[1] | | A bag has 4 balls with number 8 and 5 balls with a number 7. What will be the average of the numbers of the balls taken out of the bag | |
[1] |
Flip a coin 18 times.
Each time a head comes up you win $1 and with each tail you lose $3. How much money would you expect to make altogether? | |
[1] | A bag has 10 red balls, 3 blue balls and 9 yellow balls. You take out a blue ball, then a red ball, then another ball.
What is the probability of getting blue for the last ball? | |
[1] |
A bag has 2 red balls, 10 blue balls and 4 yellow balls. You take out a yellow ball, then a yellow ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] | Roll 36 6-sided dice.
How many times would you expect to get more than or equal to 4? | |
[1] |
We asked a group of kids how many Sandwiches they eat in a month. Here are the results:
What is the probability of the kids to eat exactly 1 Sandwiches in a month? | |
[2] | Roll 126 6-sided dice.
How many times would you expect to get an odd number? | |
[1] |
Roll 2 6-sided dice.
You add the two numbers. What is the probability of getting 12? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.7 | 0.3 | | green | orange | | Color |
Probability of Type
| | 0.6 | 0.4 | | sedan | wagon | | Type |
What is the probability of a car being a green sedan? | |
[2] |
| A bag has 8 balls with number 5 and 8 balls with a number 7. What will be the average of the numbers of the balls taken out of the bag | |
[1] | A group of kids did a math test and here are their scores out of 5:
What fraction of the kids score less than 3? | |
[2] |
There are 80 balls in a bag. This is is the probability distribution of their color:
| | 0.4 | 0.1 | 0.5 | | green | orange | blue | | Color |
How many orange balls were in the bag? | |
[1] |