Quiz about Probability quiz - 7THA

Question 1

Probability can be written as ...

Accepted Answer

all of the above

Answer

a fraction

Answer

a decimal

Answer

a percent

Question 2

What is sample space?

Accepted Answer

a list of all possible outcomes of an event

Answer

a process with an uncertain result

Answer

a possible result of an action

Answer

a single outcome or group of outcomes

Question 3

Clara picks a marble at random, puts it back, and then picks another marble at random.

Accepted Answer

Independent

Answer

Dependent

Question 4

Victor picks a card at random. Without putting the first card back, he picks a second card at random.

Accepted Answer

Dependent

Answer

Independent

Question 5

You pick a marble from this bag.
What is the probability you will choose either a black or white marble?

Accepted Answer

3/5

Answer

9/100

Answer

1/10

Answer

2/5

Question 6

Bert & Ernie choose a juice to have for breakfast.

The probability that Bert chooses orange is ³/₄.

If Bert chooses orange, the probability that Ernie chooses orange is ⁴/₅.

If Bert chooses apple the probability that Ernie chooses apple is ²/₃.

Find the value of the probability marked c.

Accepted Answer

1/4

Answer

1/5

Answer

1/3

Answer

3/4

Question 7

Bert & Ernie choose a juice to have for breakfast.

The probability that Bert chooses orange is ³/₄.

If Bert chooses orange, the probability that Ernie chooses orange is ⁴/₅.

If Bert chooses apple the probability that Ernie chooses apple is ²/₃.

Find the value of the probability marked d.

Accepted Answer

1/5

Answer

1/4

Answer

1/3

Answer

3/4

Question 8

Bert & Ernie choose a juice to have for breakfast.

The probability that Bert chooses orange is ³/₄.

If Bert chooses orange, the probability that Ernie chooses orange is ⁴/₅.

If Bert chooses apple the probability that Ernie chooses apple is ²/₃.

Find the value of the probability marked e.

Accepted Answer

1/3

Answer

1/4

Answer

1/5

Answer

3/4

Question 9

Bert & Ernie choose a juice to have for breakfast.

The probability that Bert chooses orange is ³/₄.

If Bert chooses orange, the probability that Ernie chooses orange is ⁴/₅.

If Bert chooses apple the probability that Ernie chooses apple is ²/₃.

What is the probability that both Bert & Ernie choose orange juice?

Accepted Answer

¹²/₂₀

Answer

3/9

Answer

2/12

Answer

7/9

Question 10

Bert & Ernie choose a juice to have for breakfast.

The probability that Bert chooses orange is ³/₄.

If Bert chooses orange, the probability that Ernie chooses orange is ⁴/₅.

If Bert chooses apple the probability that Ernie chooses apple is ²/₃.

What is the probability that Bert & Ernie choose different juices?

Accepted Answer

¹⁴/₆₀

Answer

3/20

Answer

1/12

Answer

¹⁹/₆₀

Question 11

There are 10 counters in a bag, 3 red and 7 blue.

I take one counter, then another without replacement.

Find the probability of picking two red counters.

Accepted Answer

6/90

Answer

5/19

Answer

⁴⁷/₉₀

Answer

2/9

Question 12

There are 10 counters in a bag, 3 red and 7 blue.

I take one counter, then another without replacement.

Find the probability of picking one of each colour counters.

Accepted Answer

⁴²/₉₀

Answer

²¹/₉₀

Answer

⁴⁸/₉₀

Answer

¹⁰/₁₉

Question 13

Two dice are rolled and it is recorded whether the result on each is odd or even. What is the probability both are odd?

Accepted Answer

1/4

Answer

1/2

Answer

2/4

Answer

3/4

Question 14

Two dice are rolled and it is recorded whether the result on each is odd or even. What is the probability that one is even and one is odd?

Accepted Answer

1/2

Answer

1/4

Answer

3/4

Answer

1/3

Question 15

A bag contains 3 lemons and 2 limes. A piece of fruit is taken from the bag and not put back. Then a second piece is taken. What is the probability of taking two limes?

Accepted Answer

1/10

Answer

2/5

Answer

5/20

Answer

4/20

Question 16

A bag contains 3 lemons and 2 limes. A piece of fruit is taken from the bag and not put back. Then a second piece is taken. What is the probability of taking exactly 1 lemon?

Accepted Answer

12/20

Answer

6/20

Answer

2/20

Answer

18/20

Question 17

What is the probability that the person picked will be a boy given they speak german?

Accepted Answer

0.7273

Answer

0.4

Answer

0.16

Answer

0.22

Probability quiz - 7THA

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