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Compound & Conditional Events (Grade 9)

Free printable Grade 9 probability worksheet: compound (independent) events and conditional probability.

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Grade 9 · Math worksheet
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Math

Probability: Compound & Conditional Events

Find the probability of independent (compound) events, or the conditional probability given the first outcome.

  1. 1.
    A fair coin is flipped and a fair six-sided die is rolled. What is the probability of getting heads AND rolling a 1? Write your answer as a fraction.
  2. 2.
    A fair coin is flipped and a fair six-sided die is rolled. What is the probability of getting tails AND rolling a 3? Write your answer as a fraction.
  3. 3.
    A fair coin is flipped and a fair six-sided die is rolled. What is the probability of getting heads AND rolling a 5? Write your answer as a fraction.
  4. 4.
    A fair coin is flipped and a fair six-sided die is rolled. What is the probability of getting tails AND rolling a 4? Write your answer as a fraction.
  5. 5.
    A fair coin is flipped and a fair six-sided die is rolled. What is the probability of getting heads AND rolling a 1? Write your answer as a fraction.
  6. 6.
    Spinner A has 5 equal sections, spinner B has 4 equal sections. Both are spun once. What is the probability of landing on one specific section on BOTH spinners? Write as a fraction.
  7. 7.
    Spinner A has 4 equal sections, spinner B has 3 equal sections. Both are spun once. What is the probability of landing on one specific section on BOTH spinners? Write as a fraction.
  8. 8.
    Spinner A has 4 equal sections, spinner B has 5 equal sections. Both are spun once. What is the probability of landing on one specific section on BOTH spinners? Write as a fraction.
  9. 9.
    Spinner A has 3 equal sections, spinner B has 3 equal sections. Both are spun once. What is the probability of landing on one specific section on BOTH spinners? Write as a fraction.
  10. 10.
    A bag has 4 red and 3 blue marbles. One marble is drawn and NOT replaced. Given the first marble drawn was red, what is the probability the second marble is also red? Write as a fraction.
  11. 11.
    A bag has 7 red and 3 blue marbles. One marble is drawn and NOT replaced. Given the first marble drawn was red, what is the probability the second marble is also red? Write as a fraction.
  12. 12.
    A bag has 5 red and 5 blue marbles. One marble is drawn and NOT replaced. Given the first marble drawn was red, what is the probability the second marble is also red? Write as a fraction.
  13. 13.
    A bag has 4 red and 7 blue marbles. One marble is drawn and NOT replaced. Given the first marble drawn was red, what is the probability the second marble is also red? Write as a fraction.
  14. 14.
    A bag has 6 red and 8 blue marbles. One marble is drawn and NOT replaced. Given the first marble drawn was red, what is the probability the second marble is also red? Write as a fraction.
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