A bag has 9 balls with numbers from 3 to 11. You take out 1 ball.
What is the probability of NOT getting a ball with a number less than 3? | |
[1] | There are 90 balls in a bag. This is is the probability distribution of their color:
| | 0.4 | 0.2 | 0.4 | | blue | pink | red | | Color |
How many blue 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:
| | 0.65 | 0.15 | | 0.15 | 0.05 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a 3? | |
[1] | You roll 2 3-sided dice
You add the two numbers. What is the probability of getting less than 5? | |
[1] |
Flip a coin 16 times.
Each time a head comes up you win $2 and with each tail you lose $3. How much money would you expect to make altogether? | |
[1] | A bag has 5 red balls and 3 blue balls. You take out a red ball, then a red ball, then another ball.
What is the probability of getting red for the last ball? | |
[1] |
You flip a coin and roll a 4 sided die.
What is the probability of getting a 4 and a head? | |
[1] | There are 40 balls in a bag. This is is the probability distribution of their color:
| | 0.1 | 0.5 | 0.4 | | blue | purple | pink | | Color |
If you choose a random ball from the bag, what is the probability of it not being pink or purple? | |
[1] |
A wheel has 6 sections, each has a reward in dollars, from $1 through to $6.
What prize do we expect to get if we spin the wheel? | |
[1] | A group of humans were timed running 100m. Here are the results:
humans
| | 1 | 3 | 5 | 2 | 3 | | 13 | 14 | 15 | 16 | 17 | | Time |
What is the probability of the humans to run 100m in less than 14s?
| |
[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:
| | 0.5 | 0.1 | 0.1 | 0.1 | 0.2 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 2 or smaller than 3? | |
[1] | A bag has 5 balls with numbers from 5 to 9. You take out 1 ball.
What is the probability of NOT getting the ball with the number 8? | |
[1] |
A group of boys did a math test and here are their scores out of 5:
What is the probability of the boys to score exactly 3? | |
[2] | A bag has 8 balls with number 5 and 7 balls with a number 1. You take out 1 ball.
What is the probability of getting the ball with the number 5? | |
[1] |
A bag has 11 balls with numbers from 2 to 12. You take out 1 ball.
What is the probability of NOT getting the ball with the number 9? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.5 | 0.5 | | orange | yellow | | Color |
Probability of Type
| | 0.7 | 0.3 | | sedan | wagon | | Type |
What is the probability of a car being a yellow wagon? | |
[2] |
You flip a coin and roll a 6 sided die.
What is the probability of getting a number less than 6 and a tail? | |
[1] |