Simple
Probability 1
Probability 1
A normal die is rolled. What is the probability of rolling a prime number? P(prime)
1/2
There is 1 red marble, 2 orange marbles and 1 yellow marble in a bag. Suppose one marble is selected. What is the probability of selecting an orange marble? Express as a fraction or percent. P(orange)
2/4 = 1/2 or 50%
What is the probability of tossing two fair coins with heads side up? P(heads)
1/4
Rick takes two coins at random from the 3 $1 coins, 5 $2 coins, and 2 10-cent coins in his pocket. What is the probability that he chooses a $1 followed by a $2 coin?
1/6
Two red counters and two white counters a placed in a bag. Find the probability of choosing a red counter followed by a white counted with replacement. P(red, then white)
1/4
A normal die is rolled. What is the probability of rolling a 4 or a 5? P(4 or 5)
1/3
Use a standard deck of cards. What is the probability of pulling out a diamond? Express as a percent. P(diamond)
25%
A normal die is rolled and a spinner labeled A - E is spun. Find the probability. P(3 and E)
1/30
You draw a card from a standard deck of cards. What is the probability that the first card will be a heart, and if replaced, the second card is a diamond? P(heart, then diamond)
1/16
A normal die is rolled. What is the probability of not rolling a 1 or a 2? P(not 1 or 2)
2/3
Use a standard deck of cards. What is the probability of pulling out a face (jack, queen, king) card? Express as a simplified fraction.
12/52 = 3/13.
A normal die is rolled and a spinner labeled A - E is spun. Find the probability. P(an odd number and a consonant)
3/10
Colt's clothes closet contains 3 blue shirts, 10 white shirts, and 7 striped shirts. What is the probability that Colt will reach in and randomly select a white shirt followed by a striped shirt? P(white, then striped)
7/38
Cards from 1-52 are in a deck. What is the probability of pulling a heart or a 3? P(heart or a 3)
13 heart cards + 3 three cards = 16/52 = 4/13
Use a standard deck of cards. What is the probability of NOT pulling out a 5? Express as a fraction.
48/52 = 12/13.
Two cards are drawn from a standard deck of cards. Once a card is selected, it is returned. What is the probability of drawing two picture cards in a row?
9/169
If a fair coin is tossed three times, what is the probability of getting tails three times in a row? P(three tails)
1/8
The picture cards are removed from a standard deck of cards and the rest are set aside. Once a card is drawn at random from the picture cards, the card is not replaced. Find the probability of pulling a jack, queen, and then king. P(jack, queen, and then king)
8/165
Suppose two-six sided dice are rolled. Find the probability of rolling the sum of 7. P(sum of 7)
First dice: 1, 2, 3 | second dice: 6, 5, 4
First dice: 6, 5, 4 | Second dice: 1, 2, 3
6 outcomes/36 = 1/6 simplified
Letter tiles A - Z are placed in a bag. What is the probability of pulling out a vowel (a, e, I, o ,u)? Express as a fraction. P(vowel)
5/26
There are 1 red marble, 2 orange marbles, 3 yellow marbles, and 4 green marbles in a bag. Once a marble is drawn, it is not replaced. Find the probability. P(two yellows in a row)
1/15
Each time a baby is born, the chance for either a boy or a girl is one-half. Find the probability that a family of five children has five girls. P(five girls)
1/32