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Simple & Compound Probability

  •  English    30     Public
    Grade 7 Probability
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  • A bag contains 4 cherry, 8 orange, 6 strawberry and 10 lemon gummy bears. A gummy bear is chosen at random, eaten, then another is chosen. Find the probability of selecting a lemon, eating it, then selecting a cherry.
    10/189
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  • A website randomly generates a password after a new user registers. The password consists of 5 single digits by 1 letter. Find the number of passwords that can be generated.
    2,600,000
  •  20
  • Find the probability of spinning a number greater than 2, then a square. Write your answer in simplest form.
    4/15
  •  20
  • A box contains 8 apple, 10 fruit punch, 10 grape, and 12 berry juice boxes. A juice box is chosen at random. Find the probability of selecting an apple or a grape juice box.
    9/20
  •  15
  • The spinner below was spun 50 times. The results of each spin are shown in the table below. If you were to spin the spinner 300 times, how many times would you expect the spinner to land on yellow based on the experiment?
    96 times
  •  25
  • The spinner below was spun 50 times. The results of each spin are shown in the table below. What is the experimental probability of spinning red or purple?
    6/25
  •  20
  • The spinner below was spun 50 times. The results of each spin are shown in the table below. What is the theoretical probability of spinning red or purple?
    2/5
  •  20
  • Credit cards place a three ­digit security code on the back of cards. How many codes are possible?
    1000
  •  15
  • The combinations for the lockers at your school consist of 3 numbers. Each number in the combination can be a number from 0 through 49. How many locker combinations are possible?
    125,000
  •  20
  • A website randomly generates a password after a new user registers. The password consists of 1 digit followed by 3 letters. How many passwords can be generated if letters cannot repeat?
    156,000
  •  15
  • What is the probability of randomly selecting a square that is shaded or odd? Write the probability as a simplified fraction.
    3/4
  •  15
  • The spinner below is spun twice. Find P(both stars) as a simplified fraction.
    1/16
  •  20
  • The spinner below is spun twice. Find P(shaded, then heart) as a simplified fraction.
    5/32
  •  20
  • A bag contains 3 basketballs, 10 baseballs, 7 golf balls, and 5 footballs. A ball is chosen at random, not replaced, then another is chosen. Find P(a football, then a baseball) as a simplified fraction.
    1/12
  •  20
  • A bag contains 3 blue marbles, 10 green marbles, 4 yellow marbles, and 8 red marbles. A marble is chosen at random, without replacement, then another marble is chosen. Find P(both yellow) as a simplified fraction.
    1/50
  •  25
  • A bag contains 3 blue marbles, 10 green marbles, 4 yellow marbles, and 8 red marbles. A marble is chosen at random, without replacement then another marble is chosen. Find P(red, then blue) as a simplified fraction.
    1/25
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