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 11
A bag contains 3 red balls and 2 blue balls. If one ball is drawn at random, what is the probability that it is blue?
A box contains 5 white, 3 black, and 2 green balls. If one ball is picked at random, what is the probability that it is not black?
A card is drawn from a standard deck of 52 cards. What is the probability that it is a king?
A coin is tossed three times. What is the probability of getting exactly two heads?
A bag contains 3 red balls and 2 blue balls. If one ball is drawn at random, what is the probability that it is blue?
A box contains 5 white, 3 black, and 2 green balls. If one ball is picked at random, what is the probability that it is not black?
A card is drawn from a standard deck of 52 cards. What is the probability that it is a king?
A coin is tossed three times. What is the probability of getting exactly two heads?
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 mutually exclusive event? (1) Getting a head and a tail in a single coin toss (2) Drawing a red card and a king from a deck (3) Rolling an even number and a number greater than 3 on a die (4) Drawing a heart and a queen from a deck
Which of the following is not a valid probability value? (1) 0 (2) 0.25 (3) 1 (4) -0.1
Which of the following is the correct formula for the probability of the union of two events A and B? (1) P(A) + P(B) (2) P(A) + P(B) - P(A and B) (3) P(A) × P(B) (4) P(A) - P(B)
Fill in the blank: If two events A and B are independent, then P(A and B) = _______.
Fill in the blank: The probability of a certain event is _______.
Fill in the blank: The sum of probabilities of all possible outcomes of a random experiment is _______.
Fill in the blank: The probability of the union of three mutually exclusive events A, B, and C is _______.
True or False: The probability of an event and its complement always add up to 1.
True or False: The probability of an impossible event is 0.
True or False: The probability of the complement of an event A is 1 - P(A).
True or False: Two events are independent if the occurrence of one affects the probability of the other.
