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Probability

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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 not green?
  • A. 1/5
  • B. 2/5
  • C. 4/5
  • D. 3/5
Q. A jar contains 5 red, 3 green, and 2 blue marbles. What is the probability of picking a green marble?
  • A. 1/5
  • B. 1/4
  • C. 3/10
  • D. 1/2
Q. If a bag contains 2 white, 3 black, and 5 blue balls, what is the probability of drawing a blue ball?
  • A. 1/5
  • B. 1/3
  • C. 1/2
  • D. 1/4
Q. If a bag contains 2 white, 3 black, and 5 red balls, what is the probability of drawing a white ball?
  • A. 1/5
  • B. 1/4
  • C. 1/2
  • D. 1/10
Q. If a bag contains 4 apples and 6 oranges, what is the probability of randomly selecting an apple?
  • A. 2/5
  • B. 4/10
  • C. 1/3
  • D. 1/2
Q. If a bag contains 4 apples and 6 oranges, what is the probability of randomly selecting an orange?
  • A. 2/5
  • B. 3/5
  • C. 4/5
  • D. 1/5
Q. If a bag contains 4 red, 3 blue, and 5 green balls, what is the probability of drawing a green ball?
  • A. 1/3
  • B. 1/4
  • C. 5/12
  • D. 5/10
Q. If a bag contains 4 red, 3 green, and 5 blue marbles, what is the probability of drawing a blue marble?
  • A. 1/3
  • B. 1/4
  • C. 5/12
  • D. 5/10
Q. If a bag contains 5 red balls and 3 blue balls, what is the probability of drawing a red ball?
  • A. 1/2
  • B. 5/8
  • C. 3/8
  • D. 1/8
Q. If a box contains 10 balls, 4 of which are blue, what is the probability of selecting a blue ball?
  • A. 2/5
  • B. 1/2
  • C. 4/10
  • D. 3/10
Q. If a box has 3 white, 2 black, and 5 blue balls, what is the probability of drawing a blue ball?
  • A. 1/2
  • B. 5/10
  • C. 5/8
  • D. 3/10
Q. If a card is drawn from a standard deck of 52 cards, what is the probability of drawing a heart?
  • A. 1/4
  • B. 1/13
  • C. 1/52
  • D. 1/2
Q. If a coin is flipped three times, what is the probability of getting exactly two heads?
  • A. 3/8
  • B. 1/2
  • C. 1/4
  • D. 1/8
Q. If a coin is tossed three times, what is the probability of getting at least one head?
  • A. 1/8
  • B. 1/2
  • C. 7/8
  • D. 3/8
Q. If a coin is tossed three times, what is the probability of getting exactly two heads?
  • A. 3/8
  • B. 1/2
  • C. 1/4
  • D. 5/8
Q. If a student has a 70% chance of passing an exam, what is the probability of failing the exam?
  • A. 0.3
  • B. 0.7
  • C. 0.5
  • D. 0.2
Q. If a student has a 70% chance of passing an exam, what is the probability of failing?
  • A. 0.3
  • B. 0.7
  • C. 0.5
  • D. 0.2
Q. In a bag of 20 candies, 5 are sour. What is the probability of picking a sour candy?
  • A. 1/4
  • B. 1/5
  • C. 1/2
  • D. 1/3
Q. In a bag of 20 candies, 8 are chocolate. What is the probability of picking a non-chocolate candy?
  • A. 3/5
  • B. 2/5
  • C. 1/4
  • D. 1/2
Q. In a class of 30 students, 18 are girls. If a student is chosen at random, what is the probability that the student is a boy?
  • A. 1/3
  • B. 2/5
  • C. 1/2
  • D. 3/5
Q. In a class of 30 students, 18 are girls. If a student is selected at random, what is the probability that the student is a boy?
  • A. 0.4
  • B. 0.6
  • C. 0.5
  • D. 0.3
Q. In a class of 30 students, 18 are girls. What is the probability that a randomly selected student is a boy?
  • A. 3/5
  • B. 2/5
  • C. 1/2
  • D. 1/3
Q. In a deck of 52 cards, what is the probability of drawing a heart?
  • A. 1/4
  • B. 1/13
  • C. 1/2
  • D. 3/13
Q. In a lottery with 10 tickets, 2 are winning tickets. What is the probability of picking a winning ticket?
  • A. 1/5
  • B. 1/10
  • C. 2/10
  • D. 2/5
Q. In a lottery with 10 tickets, 3 are winning tickets. What is the probability of selecting a winning ticket?
  • A. 1/3
  • B. 3/10
  • C. 1/4
  • D. 1/5
Q. In a lottery with 100 tickets, 10 are winning tickets. What is the probability of selecting a winning ticket?
  • A. 1/10
  • B. 1/5
  • C. 1/20
  • D. 1/2
Q. In a lottery with 100 tickets, 10 are winning tickets. What is the probability of picking a winning ticket?
  • A. 1/10
  • B. 1/5
  • C. 1/20
  • D. 1/50
Q. In a lottery with 50 tickets, 5 are winning tickets. What is the probability of picking a winning ticket?
  • A. 1/10
  • B. 1/5
  • C. 1/20
  • D. 1/50
Q. In a lottery, there are 10 tickets, and 3 of them are winning tickets. What is the probability of picking a winning ticket?
  • A. 1/10
  • B. 1/3
  • C. 3/10
  • D. 1/5
Q. In a lottery, there are 100 tickets, and 10 are winning tickets. What is the probability of picking a winning ticket?
  • A. 1/10
  • B. 1/5
  • C. 1/20
  • D. 1/50
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