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And Probability

Authored by Anthony Clark

Mathematics

11th Grade

And Probability
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15 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

80 students study Music at Harmony College. The number of them doing Chorus, Band or Orchestra are shown on the Venn diagram. What is the probability that a randomly selected Music student studies exactly two of these options?

19/80

24/80

0.19

34/80

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A bag contains 5 red marbles, 4 blue marbles and a green marble. Two marbles are drawn from the bag (without replacement). What is the probability that both marbles are red?

⅕ × ¼ = 1/20

4/5 × 4/5 = 16/25

4/5 × 3/4 = 12/20

none of these options is correct

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

If a letter is drawn randomly from the bag shown, what is the probability that it is not a consonant?

1/14

7/15

5/14

1/2

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

80 students study Music at Harmony College. The number of them doing Chorus, Band or Orchestra are shown on the Venn diagram. What is the probability that a randomly selected Music student does Band only?

50%

20%

20/70

1/4

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

80 students study Music at Harmony College. The number of them doing Chorus, Band or Orchestra are shown on the Venn diagram. What is the probability that a randomly selected Music student studies Chorus and Orchestra?

12%

3/20

0.12

12

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

80 students study Music at Harmony College. The number of them doing Chorus, Band or Orchestra are shown on the Venn diagram. What is the probability that a randomly selected Music student studies only one of these options?

19/80

24/80

0.19

46/80

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A bag contains 5 red marbles, 4 blue marbles and a green marble. If a marble is drawn at random from the bag, what is the probability that it is blue?

4

4/9

0.4

0.04

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