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Year 9 Probability Worksheet — Level 2 — Practice Set 4 — Answers

Answer sheet with worked solutions for the Year 9 probability worksheet.

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Success TutoringWorksheetsAnswer sheetYear 9 · Mathematics · Probability

Year 9 Probability Worksheet — Level 2 — Practice Set 4 — Answers

Write each probability as a fraction in simplest form.

1.A fair six-sided die is rolled. What is the probability of rolling a number greater than 5?

Answer:

  1. Favourable outcomes: 1 out of 6
2.A fair six-sided die is rolled. What is the probability of rolling a multiple of 3?

Answer:

  1. Favourable outcomes: 2 out of 6
3.A bag has 5 red, 3 blue and 3 green marbles. One is chosen at random. What is the probability it is red?

Answer:

  1. Total marbles: 11
  2. P(red) = 5/11 =
4.The probability that it rains tomorrow is . What is the probability that it does not rain?

Answer:

  1. P(not rain) = 1 − =
5.A bag has 3 red, 5 blue and 6 green marbles. One is chosen at random. What is the probability it is green?

Answer:

  1. Total marbles: 14
  2. P(green) = 6/14 =
6.A fair six-sided die is rolled. What is the probability of rolling an even number?

Answer:

  1. Favourable outcomes: 3 out of 6
7.A fair six-sided die is rolled. What is the probability of rolling a number greater than 2?

Answer:

  1. Favourable outcomes: 4 out of 6
8.The probability that it rains tomorrow is . What is the probability that it does not rain?

Answer:

  1. P(not rain) = 1 − =
9.A bag has 4 red, 3 blue and 2 green marbles. One is chosen at random. What is the probability it is blue?

Answer:

  1. Total marbles: 9
  2. P(blue) = 3/9 =
10.A bag has 2 red, 3 blue and 3 green marbles. One is chosen at random. What is the probability it is blue?

Answer:

  1. Total marbles: 8
  2. P(blue) = 3/8 =
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