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WorksheetsDacula General Probability
Total questions: 20
Worksheet time: 1hrs 21mins
Name
Class
Date
1.
A number cube numbered (1, 2, 3, 4, 5, 6) is rolled and a spinner with 4 sections (A, B, C, D) is spun. P(1 and A)
a)
1/24
b)
1/12
c)
1/6
d)
2/24
2.
A number cube numbered (1, 2, 3, 4, 5, 6) is rolled and a spinner with 4 sections (A, B, C, D) is spun. P(odd and B)
a)
2/8
b)
1/8
c)
1/16
d)
3/4
3.
What is the probability of rolling a number cube 3 times and getting a number less than 3 each time?
a)
3/27
b)
9/27
c)
1/27
d)
1/28
4.
What is the probability of rolling a 2 on a dice AND pulling a spade out of a deck of cards?
a)
1 ⁄ 10
b)
1 ⁄ 12
c)
1 ⁄ 24
d)
1 ⁄ 6
5.
Find the probability:
You rolled a fair six-sided die twice. the first roll shows a 5 and the second roll shows a 6.
You rolled a fair six-sided die twice. the first roll shows a 5 and the second roll shows a 6.
a)
1/72
b)
1/6
c)
1/36
6.
Ricardo has the spinner pictured here and a bag of marbles filled with 2 red marbles, 3 green marbles, and 3 blue marbles. What is the probability that Ricardo spins red on the spinner and picks a red marble out of the bag?
a)
1 ⁄ 16
b)
1 ⁄ 2
c)
1 ⁄ 4
d)
1 ⁄ 8
7.
Dependent or Independent:
You flip a coin and then roll a fair six-sided die. The coin lands heads-up and the die shows a one.
You flip a coin and then roll a fair six-sided die. The coin lands heads-up and the die shows a one.
a)
Dependent
b)
Independent
8.
Dependent or Independent:
A box of chocolates contain 5 milk chocolates, 5 dark chocolates, and 5 white chocolates. You randomly select and eat 3 chocolates. The first piece is milk chocolate, the second is dark chocolate, and the third white chocolate.
A box of chocolates contain 5 milk chocolates, 5 dark chocolates, and 5 white chocolates. You randomly select and eat 3 chocolates. The first piece is milk chocolate, the second is dark chocolate, and the third white chocolate.
a)
Dependent
b)
Independent
9.
You flip a nickel three times.
Find the probability that all flips will land on tails.
Find the probability that all flips will land on tails.
a)
1/2
b)
1/4
c)
1/6
d)
1/8
10.
You pick a marble from this bag.
What is the probability you will choose either a black or white marble?
What is the probability you will choose either a black or white marble?
a)
3/5
b)
9/100
c)
1/10
d)
2/5
11.
The cafeteria is serving three kinds of sandwiches: tuna (T), chicken, (C), and peanut butter (P). They are also serving a choice of two drinks: milk (M) or water (W). Which is the complete set of possibilities of combinations?
a)
TW, CW, PW
b)
TW, TM, TW, CW, PW
c)
TW, TM, CW, CM, PW, PM
12.
If you draw one card from a standard deck, what is the probability of drawing a 5 or a diamond? Are the events inclusive or mutually exclusive?
a)
Inclusive
b)
Mutually Exclusive
13.
If you draw one card from a standard deck, what is the probability of drawing a 5 or a diamond?
a)
2/52
b)
4/52
c)
16/52
d)
26/52
14.
If you roll one die, what is the probability of getting an odd number or a 4?
a)
2/3
b)
1/3
c)
1/2
d)
1/6
15.
The probability that an event does NOT occur is
a)
highly unlikely
b)
1 - the probability that it does occur
c)
a matter of opinion
d)
always less than the probability that it does occur
16.
The image represents which of the following?
a)
intersection, "and"
b)
union, "or"
c)
intersection, "or"
d)
union, "and"
17.
The image represents which of the following?
a)
intersection, "and"
b)
intersection, "or"
c)
union, "and"
d)
union, "or"
18.
P(Pizza ∩ Water) =
a)
62/182
b)
120/400
c)
58/400
d)
140/400
19.
P(Pizza) =
a)
182/400
b)
120/400
c)
58/200
d)
200/400
20.
P(Pizza ∪ Water) =
a)
182/400 + 140/400 - 58/400
b)
182/400 + 140/400 - 0
c)
58/400 + 140/400 -182/400
d)
182 + 140 - 58
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