Probability
Types of exercises: probability with one die, drawing a ball from a box, probability with a polyhedral die, a ball that is not a given colour, certain, possible and impossible events, how many balls are in the box?.
Exercises are drawn at random from a large bank - every click gives a different set.
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Solved: 0 of 10
Problem
A box contains only white and black balls, including 27 white balls. One ball is drawn. The probability of drawing a white ball is 3/4. How many black balls are in the box?
What is the probability?
A box holds 11 white balls and 7 black balls. One ball is drawn. What is the probability of drawing a white ball?
What is the probability?
A 12-sided die with faces numbered 1 to 12 is rolled once. What is the probability that a multiple of 5 comes up?
What is the probability?
A six-sided die is rolled once. What is the probability that a number greater than 7 comes up?
What is the probability?
A single die is rolled. What is the probability that an even number comes up?
What is the probability?
A box contains 50 balls: red, blue and yellow. The probability of drawing a yellow ball is 4/5. One ball is drawn. What is the probability that the ball drawn is not yellow?
Problem
A box contains only white and black balls, including 6 white balls. One ball is drawn. The probability of drawing a white ball is 1/4. How many balls are in the box altogether?
What is the probability?
A box holds 7 white balls and 10 black balls. One ball is drawn. What is the probability of drawing a black ball?
What is the probability?
A 10-sided die with faces numbered 1 to 10 is rolled once. What is the probability that a two-digit number comes up?
What is the probability?
A six-sided die is rolled once. What is the probability that a two-digit number comes up?
This address is one particular set - everyone who opens it gets exactly the same exercises. Copy the link from the address bar and send it to the class. You can generate a new set at the top of the page.
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