Probability
Math ⇒ Statistics and Probability
Probability starts at 7 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Probability.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 9
A bag contains 3 red balls and 2 blue balls. What is the probability of picking a blue ball at random?
A bag contains 4 black and 6 white balls. If one ball is drawn at random, what is the probability that it is not black?
A bag contains 7 blue and 3 green balls. What is the probability of picking a green ball?
A bag contains 8 red, 5 blue, and 7 green balls. What is the probability of picking a ball that is not blue?
A bag contains 3 red balls and 2 blue balls. What is the probability of picking a blue ball at random?
A bag contains 4 black and 6 white balls. If one ball is drawn at random, what is the probability that it is not black?
A bag contains 7 blue and 3 green balls. What is the probability of picking a green ball?
A bag contains 8 red, 5 blue, and 7 green balls. What is the probability of picking a ball that is not blue?
If an event is certain to happen, its probability is (1) 0 (2) 1 (3) 0.5 (4) 2
If the probability of an event is 0, the event is (1) Certain (2) Impossible (3) Likely (4) Unlikely
Which of the following cannot be the probability of an event? (1) 0.5 (2) 1.2 (3) 0 (4) 1
Which of the following is a valid probability value? (1) -0.1 (2) 0.6 (3) 1.5 (4) 2
Fill in the blank: Probability is defined as the ratio of the number of _______ outcomes to the total number of possible outcomes.
Fill in the blank: The probability of an event that is neither certain nor impossible is always _______ 0 and 1.
Fill in the blank: The probability of an event that is sure to happen is _______.
Fill in the blank: The sum of probabilities of all possible outcomes of a random experiment is _______.
True or False: Probability can be expressed as a percentage.
True or False: The probability of an event and its complement always add up to 1.
True or False: The probability of an event is always a rational number.
True or False: The probability of an impossible event is 1.
