Probability Powerplay

Level 6, 2026-03-26

A bag has 9 balls with number 6 and 2 balls with a number 9. You take out 1 ball.
What is the probability of getting the ball with the number 9?

[1]

There are 8 balls in a bag. This is is the probability distribution of their color:

How many pink balls were in the bag?

[1]

There are 100 balls in a bag. This is is the probability distribution of their color:

How many blue balls were in the bag?

[1]

A group of people were timed running 100m. Here are the results:

What is the probability of the people to run 100m in more than 17s?

[2]

A group of boys were timed running 100m. Here are the results:

What fraction of the boys run 100m in less than 15s?

[2]

A group of humans were timed running 100m. Here are the results:

What fraction of the humans run 100m in more than 13s?

[2]

Roll 78 6-sided dice.
How many times would you expect to get an odd number?

[1]

A wheel has 13 sections, each has a reward in dollars, from $1 through to $13.
What prize do we expect to get if we spin the wheel?

[1]

There are 10 balls in a bag. This is is the probability distribution of their color:

How many orange balls were in the bag?

[1]

A wheel has 11 sections, each has a reward in dollars, from $1 through to $11.
What prize do we expect to get if we spin the wheel?

[1]

A group of humans did a math test and here are their scores out of 5:

What is the probability of the humans to score exactly 1?

[2]

We asked a group of people how many Hot dogs they eat in a week. Here are the results:

What is the probability of the people to eat exactly 2 Hot dogs in a week?

[2]

A bag has 9 balls with number 8 and 9 balls with a number 5. What will be the average of the numbers of the balls taken out of the bag

[1]

Roll 1 6-sided die.
What is the probability of getting a number bigger than 5?

[1]

Roll 138 6-sided dice.
How many times would you expect to get more than 1?

[1]