Simple Event & Complements
3% of Americans are vegan. If you are to ask a random person whether he or she is a vegan, what is the probability that the person is NOT a vegan?
97/100 or 97%
Asia has 5 pink bows, 1 blue bow, and 4 purple bows in a box. She will randomly choose 1 bow from the box. What is the probability Asia will choose a purple bow?
A. 1/2
B. 2/5
C. 1/10
D. 3/5
B. 2/5
Choose a number between 1 and 25. What is the probability that it is an even number?
12/25 or 48%
A spinner with 6 equal sections, labeled 1-6 is used. What is the probability of spinning a number greater than 4?
A. 1/6
B. 2/3
C. 1/2
D. 1/3
D. 1/3
Knox has three number cubes. The faces of each number cube are numbered from 1 to 6. Knox will roll each number cube one time. What is the probability that all three number cubes will land on an odd number?
a. 1/2
b. 1/6
c. 1/3
d. 1/8
d. 1/8
A survey showed that 8 out of 20 homeowners in a neighborhood had cable television. If there were 320 homeowners in the neighborhood, how many could be expected to have cable television?
A. 40
B. 256
C. 312
D. 128
D. 128
Kayden has a bag of coins. The bag contains 10 dimes, 5 nickels, and 1 penny. He will randomly select 2 coins from the bag at one time without replacement. What is the probability that Kayden will select a dime first and then a penny?
A. 83/120
B. 11/16
C. 5/128
D. 1/24
D. 1/24
A spinner is divided into congruent sections that are labeled from 1 through 7. If the spinner is spun one time, what is the probability of the arrow NOT landing on a section labeled with an odd number?
a. 4/7
b. 3/4
c. 1/4
d. 3/7
d. 3/7
A deck of cards contains 12 cards with letters and 16 cards with numbers. A card is pulled from the deck and replaced. This process is carried out 14 times. What is a reasonable prediction for the number of times a card with a letter should be chosen?
A. 10
B. 2
C. 6
D. 12
C. 6
A bag contains flavored lollipops. A lollipop will be randomly selected from the bag.
- 17 lollipops are grape flavored
- 8 lollipops are cherry flavored
-14 lollipops are watermelon flavored
-16 lollipops are strawberry flavored
What is the probability in decimal form that the selected lollipop will be either cherry flavored or watermelon flavored?
0.4
Tara has two bags of marbles. The first bag contains 6 red marbles, 5 blue marbles, and 4 green marbles. The second bag contains 3 red marbles, 2 blue marbles, and 4 green marbles. Tara will randomly select 1 marble from each bag. What is the probability that Tara will select a blue marble from each bag?
a. 5/9
b. 1/135
c. 1/6
d. 2/27
d. 2/27
A study of a population of 1,200 frogs revealed that 12 out of every 180 frogs in the population have spots on their back. Based on the results of this study, how many frogs in the population do NOT have spots on their back?
D. 1,120
Barrett has a 12-sided die numbered from one to twelve is rolled once. What is the probability the die will land on a number divisible by 3?
A. 66 2/3%
B. 33 1/3%
C. 50%
D. 25%
B. 33 1/3%