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Dependant Probability

Total questions: 13

Worksheet time: 35mins

Name
Class
Date
1.
A box contains 5 purple marbles, 3 green marbles and 2 orange marbles. Draws are made without replacement.P(both marbles are purple)
a)
2/9
b)
1/3
c)
1/2
d)
1/4
2.
A jar contains 4 white chips, 5 purple chips, and 1 black chip. Chips are selected randomly one at a time, and are not replaced.
P(white, then purple, then black)
a)
1/36
b)
2/39
c)
5/41
d)
6/43
3.

A bag has 2 yellow marbles and 8 brown marbles. Nancy takes out two marbles without replacing the marbles. What is the probability that they will both be yellow?

a)

2/19

b)

1/10

c)

1/25

d)

1/45

4.

Hana buys a pack of bubble gum that has 3 orange, 6 pink, 1 yellow, and 5 red gums.  She puts the gums in the bowl.  If she reaches in and grabs two gums without putting one back, what is the probability that she will pick a pink and then a yellow?

a)
1/35
b)
7/210
c)
6/225
d)
2/75
5.

What is the probability of drawing an odd number, then drawing a 6? (no replacement--dependent event)

a)

3/8

b)

3/7

c)

9/56

d)

5/37

6.

What is the probability of drawing a 2, then drawing another 2? (no replacement--dependent event)

a)

2/8 = 1/4

b)

2/56 = 1/28

c)

1/7

d)

3/7

7.

What is the probability of drawing number divisible by 3, then drawing a 1? (no replacement--dependent event)

a)

4/8 = 1/2

b)

2/7

c)

4/9

d)

8/56 = 1/7

8.

What is the probability of drawing a 1, then drawing a 6? (no replacement--dependent event)

a)

6/56 = 3/28

b)

3/7

c)

2/8 = 1/4

d)

8/56 = 1/7

9.

What is the probability of drawing a 9, then drawing another 9? (no replacement--dependent event)

a)

1/8

b)

4/8 = 1/2

c)

0

d)

2/9

10.

What is the probability of drawing a 9, then drawing a number divisible by 1? (no replacement--dependent event)

a)

8/56 = 1/7

b)

1/8

c)

8/7

d)

2/9

11.

What is the probability of drawing an even number, then drawing a 1? (no replacement--dependent event)

a)

5/8

b)

2/7

c)

10/56 = 5/28

d)

2/56 = 1/28

12.

What is the probability of drawing a 6, then drawing an odd number? (no replacement--dependent event)

a)

3/8

b)

9/56

c)

10/56 = 5/28

d)

3/7

13.

What is the probability of drawing a prime number, then drawing a composite number? (no replacement--dependent event)

a)

6/56 = 3/28

b)

4/8 = 1/2

c)

16/56 = 2/7

d)

8/56 = 1/7