WorksheetsBasic Probability
Total questions: 25
Worksheet time: 2hrs 43mins
Name
Class
Date
1.
Find the experimental probability of spinning Letter Q.
a)
15/15
b)
3/10
c)
3/50
d)
7/10
2.
In a standard deck of 52 cards there are 13 diamonds and 13 hearts (red) and 13 spades and 13 clubs (black). Find the probability of choosing a card at random that is a spade OR a 7
a)
1/52
b)
1/13
c)
4/13
d)
17/52
3.
What is the probability of drawing a black 5 from a standard deck of playing cards?
a)
1/2
b)
4/52
c)
1/13
d)
1/26
4.
find the probability of choosing a student at random that plays an instrument OR a sport
a)
1/2
b)
13/20
c)
21/20
d)
4/5
5.
A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue?
a)
5/6
b)
1/2
c)
1/3
d)
1/6
6.
What is the probability of getting any letter that is not A?
a)
6/8
b)
3/4
c)
2/8
d)
1/4
7.
A bag of marbles contains 5 red, 7 purple, and 3 blue marbles. If one marble is chosen at random, what is the probability that the marble is NOT blue?
a)
4/5
b)
1/5
c)
3/5
d)
2/5
8.
What is the probability of NOT spinning green on this spinner?
a)
1/4
b)
3/4
c)
1/12
d)
5/12
9.
On a 6-sided die, which is more likely?
a)
Rolling an odd number
b)
Rolling an even number
c)
They are both equally likely.
10.
A letter of the alphabet is chosen at random, then a coin is flipped. What is the probability of choosing a letter from the word MATH then getting tails?
a)
17/26
b)
1/13
c)
5/13
d)
5/26
11.
The two spinners above are spun. What is the probability of getting a perfect square (1,4,9,16), then the letter Z?
a)
3/20
b)
9/20
c)
1/8
d)
11/40
12.
Kaylee has 1 red, 3 blue, 2 brown,
5 black, 1 purple, and 4 pairs of pink flip-flops in her closet. Assuming she always replaces them, what is the probability that she will choose a blue pair on Monday and a pink pair on Tuesday?
5 black, 1 purple, and 4 pairs of pink flip-flops in her closet. Assuming she always replaces them, what is the probability that she will choose a blue pair on Monday and a pink pair on Tuesday?
a)
3/8
b)
4/75
c)
3/64
d)
15/32
13.
Sam is fishing in a new catch and release pond that was just stocked with 32 bluegill, 49 catfish, 27 bass, and 12 carp. He catches a fish, releases it, then catches another. What is the probability that he caught a bluegill, then a carp?
a)
5/24
b)
11/30
c)
2/75
d)
7/60
14.
Jacob's piggy bank has18 quarters, 20 dimes, 24 nickels, and 43 pennies. He chooses a coin, does not replace it, then chooses another. What is the probability that he chose a dime then
a nickel?
a nickel?
a)
9/52
b)
4/91
c)
44/105
d)
11/26
15.
A fruit basket contains
9 apples, 3 bananas, 7 oranges, 5 pears, and 1 grapefruit. Kyle randomly chooses a fruit, does not replace it, then chooses another. What is the probably that he chose two pears?
9 apples, 3 bananas, 7 oranges, 5 pears, and 1 grapefruit. Kyle randomly chooses a fruit, does not replace it, then chooses another. What is the probably that he chose two pears?
a)
9/49
b)
4/125
c)
1/10
d)
1/30
16.
A cookie jar has 3 dozen chocolate chip, 1 dozen peanut butter, and 2 dozen oatmeal raisin cookies. If Megan chooses a cookie, does not replace it, then chooses another, what is the probability that she chooses a peanut butter then a chocolate chip cookie?
a)
2/3
b)
1/10
c)
6/71
d)
11/72
17.
Clare picks a marble at random, puts it back, and then picks another marble at random.
a)
Dependent
b)
Independent
18.
Pablo chooses a colored marble from a mixed bag and writes down the color. Pablo leaves it out and then draws another.
a)
Independent
b)
Dependent
19.
Christopher picks a marble at random. Without putting the first marble back, he picks a second marble at random.
a)
Independent
b)
Dependent
20.
Reid picks a card at random. Without putting the first card back, he picks a second card at random.
a)
Dependent
b)
Independent
21.
You have a bag of 10 marbles. Four are red and 6 are blue. What is the probability of drawing a red marble, putting it back in the bag, and then drawing another red marble?
a)
Dependent
b)
Independent
22.
What is the probability of drawing a King from a deck of cards, putting it back in the deck, shuffling the deck, and then drawing a Jack?
a)
Independent
b)
Dependent
23.
Clara picks a card at random, puts it back, and then picks another card at random.
a)
Independent
b)
Dependent
24.
Jackson pulls a coin out of his pocket and places it on the table. Then he reaches back into his pocket and takes out a second coin.
a)
Dependent
b)
Independent
25.
Each of the letters in MATHEMATICS are on separate cards, face down on a table. If you pick a card at random, and then another card without replacement what is the probability that both card will be a vowel?
a)
4/11
b)
16/121
c)
7/21
d)
6/55
100 %
