Probability Basics
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Q. A bag contains 3 red balls and 2 blue balls. If one ball is drawn at random, what is the probability that it is red?
Q. A box contains 10 balls, 4 of which are red and 6 are blue. If one ball is drawn, what is the probability that it is blue?
Q. A box contains 10 balls, 4 of which are red and 6 are blue. If one ball is drawn at random, what is the probability that it is not blue?
Q. A box contains 10 balls, 4 of which are white and the rest are black. If one ball is drawn at random, what is the probability that it is not black?
Q. A box contains 10 balls, 4 of which are white and the rest are black. If one ball is drawn at random, what is the probability that it is not white?
Q. A box contains 5 white and 3 black balls. If one ball is drawn at random, what is the probability that it is not black?
Q. A box contains 5 white and 3 black balls. If two balls are drawn at random, what is the probability that both are white?
Q. A card is drawn from a standard deck of 52 cards. What is the probability that the card drawn is a queen?
Q. A card is drawn from a standard deck of 52 cards. What is the probability that the card drawn is a heart?
Q. A die is rolled. What is the probability of rolling an even number?
Q. A family has 2 children. What is the probability that both children are boys if it is known that at least one is a boy?
Q. A family has 2 children. What is the probability that both children are boys, given that at least one is a boy?
Q. A family has 2 children. What is the probability that both children are boys?
Q. A jar contains 4 red, 5 green, and 6 blue marbles. If one marble is drawn at random, what is the probability that it is either red or green?
Q. A jar contains 4 red, 5 green, and 6 blue marbles. If one marble is drawn at random, what is the probability that it is not green?
Q. A jar contains 4 red, 5 green, and 6 blue marbles. If one marble is drawn at random, what is the probability that it is not blue?
Q. A jar contains 4 red, 5 green, and 6 blue marbles. What is the probability of drawing a green marble?
Q. A jar contains 4 red, 5 green, and 6 blue marbles. What is the probability of picking a green marble?
Q. A jar contains 4 red, 5 green, and 6 blue marbles. What is the probability of randomly selecting a green marble?
Q. A jar contains 5 red, 3 green, and 2 blue marbles. If one marble is drawn at random, what is the probability that it is either red or green?
Q. A jar contains 5 red, 3 green, and 2 blue marbles. What is the probability of drawing a green marble?
Q. A jar contains 5 red, 3 green, and 2 yellow marbles. If one marble is drawn at random, what is the probability that it is either red or green?
Q. A student has a 70% chance of passing an exam. What is the probability that the student fails the exam?
Q. If a card is drawn from a standard deck of 52 cards, what is the probability that it is a heart?
Q. If a die is rolled, what is the probability of rolling a number greater than 4?
Q. If a student guesses on a multiple-choice test with 4 options for each question, what is the probability of guessing the correct answer?
Q. If a student guesses on a multiple-choice test with 4 options per question, what is the probability of guessing the correct answer?
Q. If a student is selected at random from a group of 20 students, 12 of whom are boys, what is the probability that the student is a girl?
Q. If a student is selected at random from a group of 20 students, 12 of whom are boys, what is the probability that the student is a boy?
Q. If a student is selected at random from a group of 20 students, 8 of whom are girls, what is the probability that the selected student is a boy?
