Year 9 Probability Worksheet — Level 1 — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 9 probability worksheet.
Success TutoringWorksheetsAnswer sheetYear 9 · Mathematics · ProbabilityYear 9 Probability Worksheet — Level 1 — Practice Set 2 — Answers
Write each probability as a fraction in simplest form.
1.A bag has 1 red, 4 blue and 6 green marbles. One is chosen at random. What is the probability it is green?
Answer:
- Total marbles: 11
- P(green) = 6/11 =
2.A fair six-sided die is rolled. What is the probability of rolling a prime number?
Answer:
- Favourable outcomes: 3 out of 6
3.A fair six-sided die is rolled. What is the probability of rolling a number greater than 1?
Answer:
- Favourable outcomes: 5 out of 6
4.A bag has 3 red, 2 blue and 6 green marbles. One is chosen at random. What is the probability it is blue?
Answer:
- Total marbles: 11
- P(blue) = 2/11 =
5.A bag has 3 red, 1 blue and 2 green marbles. One is chosen at random. What is the probability it is blue?
Answer:
- Total marbles: 6
- P(blue) = 1/6 =
6.A bag has 6 red, 1 blue and 6 green marbles. One is chosen at random. What is the probability it is blue?
Answer:
- Total marbles: 13
- P(blue) = 1/13 =
7.A fair six-sided die is rolled. What is the probability of rolling a number greater than 3?
Answer:
- Favourable outcomes: 3 out of 6
8.A fair six-sided die is rolled. What is the probability of rolling a multiple of 3?
Answer:
- Favourable outcomes: 2 out of 6
9.A bag has 4 red, 4 blue and 6 green marbles. One is chosen at random. What is the probability it is red?
Answer:
- Total marbles: 14
- P(red) = 4/14 =
10.A fair six-sided die is rolled. What is the probability of rolling an even number?
Answer:
- Favourable outcomes: 3 out of 6
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