A bag has 9 red balls, 7 blue balls and 9 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] | There are 14 balls in a bag. This is is the probability distribution of their color:
How many red balls were in the bag? | |
[1] |
Cars go by on a road, each is a different color and type.
Probability of Color
| | 1 | | red | blue | | Color |
Probability of Type
| | 1 | | | sedan | wagon | | Type |
What is the probability of a car being a blue sedan? | |
[2] | There are 120 balls in a bag. This is is the probability distribution of their color:
How many green 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:
What is the probability of rolling a 4? | |
[1] | Roll 24 6-sided dice.
How many times would you expect to get an odd number? | |
[1] |
There are 50 balls in a bag. This is is the probability distribution of their color:
| | 0.5 | 0.2 | 0.3 | | green | yellow | red | | Color |
How many green balls were in the bag? | |
[1] | We asked a group of girls how many Oranges they eat in a month. Here are the results:
What fraction of the girls eat exactly 4 Oranges in a month? | |
[2] |
There are 90 balls in a bag. This is is the probability distribution of their color:
| | 0.1 | 0.4 | 0.5 | | yellow | purple | orange | | Color |
How many yellow balls were in the bag? | |
[1] | There are 12 balls in a bag. This is is the probability distribution of their color:
How many green balls were in the bag? | |
[1] |
Cars go by on a road, each is a different color and type.
Probability of Color
| | 0.7 | 0.3 | | blue | green | | Color |
Probability of Type
| | 0.4 | 0.6 | | wagon | sedan | | Type |
What is the probability of a car being a green sedan? | |
[2] | A bag has 5 red balls and 8 blue balls. You take out 1 blue ball, then another ball.
What is the probability of getting blue for the second ball? | |
[1] |
| You shoot an arrow at a target. There is a 30% chance of scoring a 10 and a 10% chance of scoring a 30 and a 60% chance of scoring a 60. What average score do you expect to get if you do this many times? | |
[1] | There are 20 balls in a bag. This is is the probability distribution of their color:
| | 0.5 | | 0.5 | | red | yellow | purple | | Color |
How many purple balls were in the bag? | |
[1] |
There are 70 balls in a bag. This is is the probability distribution of their color:
How many pink balls were in the bag? | |
[1] | You flip a coin and roll a 6 sided die.
What is the probability of getting a number more than 2 and a tail? | |
[1] |
A wheel has 10 sections, 2 of each color.
What is the probability of getting yellow? | |
[1] |