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.
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When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 12
A bag contains 6 green and 4 yellow balls. Two balls are drawn at random without replacement. What is the probability that both are green?
A box contains 10 bulbs, 3 of which are defective. If one bulb is drawn at random, what is the probability that it is not defective?
A box contains 4 white, 3 black, and 2 red balls. If one ball is drawn at random, what is the probability that it is not black?
A card is drawn at random from a standard deck. What is the probability that it is either a heart or a king?
A card is drawn from a standard deck of 52 cards. What is the probability that it is a face card (Jack, Queen, or King)?
A die is rolled twice. What is the probability that both rolls result in an even number?
A bag contains 5 red balls and 3 blue balls. If one ball is drawn at random, the probability that it is blue is ______.
A bag contains 6 green and 4 yellow balls. Two balls are drawn at random without replacement. What is the probability that both are green?
A box contains 10 bulbs, 3 of which are defective. If one bulb is drawn at random, what is the probability that it is not defective?
A box contains 4 white, 3 black, and 2 red balls. If one ball is drawn at random, what is the probability that it is not black?
Which of the following is NOT a valid probability value? (1) 0.5 (2) -0.2 (3) 1 (4) 0
Which of the following pairs of events are independent? (1) Tossing two coins (2) Drawing two cards from a deck without replacement (3) Rolling a die and tossing a coin (4) Drawing two marbles from a bag with replacement
Which of the following statements is true? (1) Probability can be greater than 1 (2) Probability can be negative (3) Probability is always between 0 and 1 (4) Probability is always 0
A bag contains 5 red balls and 3 blue balls. If one ball is drawn at random, the probability that it is blue is ______.
If the probability of an event is 0, the event is called a(n) ______ event.
If two events A and B are independent, then P(A ∩ B) = ______.
If P(A) = 0.5, P(B) = 0.4, and P(A ∩ B) = 0.2, are A and B independent?
If P(A) = 0.7 and P(B) = 0.6, can A and B be mutually exclusive?
If two events are independent, does the occurrence of one affect the probability of the other?
True or False: The probability of an impossible event is 1.
