Roll 138 6-sided dice.
How many times would you expect to get more than or equal to 6? | |
[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:
| | 0.45 | 0.1 | 0.1 | 0.25 | 0.1 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling a number that is bigger than 4? | |
[1] |
You roll 2 3-sided dice
You add the two numbers. What is the probability of getting exactly 3? | |
[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:
| | 0.3 | 0.25 | 0.2 | | 0.25 | | 1 | 2 | 3 | 4 | 5 | | Number |
What is the probability of rolling 3 or 4? | |
[1] |
Roll 1 6-sided die.
What is the probability of getting a 3? | |
[1] | You flip a coin and roll a 5 sided die.
What is the probability of getting a 6 and a head? | |
[1] |
A group of dogs did a math test and here are their scores out of 5:
What fraction of the dogs score less than 5? | |
[2] | Roll 1 6-sided die.
What is the probability of NOT getting a 4? | |
[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 that is bigger than 2 and smaller than 5? | |
[1] | A bag has 7 red balls, 4 blue balls and 8 yellow balls. You take out a yellow ball, then a red ball, then another ball.
What is the probability of getting yellow for the last ball? | |
[1] |
Roll 102 6-sided dice.
How many times would you expect to get a number less than 5? | |
[1] | Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.8 | 0.2 | | purple | blue | | Color |
Probability of Type
| | 1 | | | wagon | sedan | | Type |
What is the probability of a car being a purple sedan? | |
[2] |
You roll 2 3-sided dice
You add the two numbers. What is the probability of getting less than 3? | |
[1] | Flip a coin 4 times.
Each time a head comes up you win $3 and with each tail you lose $2. It costs $1 to play (paid once). How much money would you expect to make altogether? | |
[1] |
| You shoot an arrow at a target. There is a 40% chance of scoring a 30, a 50% chance of scoring a 60, or you might miss completely and score 0. What average score do you expect to get if you do this many times? | |
[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 less than 1? | |
[2] |
| A bag has 2 balls with number 3 and 2 balls with a number 6. What will be the average of the numbers of the balls taken out of the bag | |
[1] |