Simple Probability
More Simple Probability
Independent Events
Dependent Events
Total Outcomes
100
Suppose a number cube is rolled. What is the probability of rolling an even number?
3/6 = 1/2
100
There are 1 red marble, 2 orange marbles, 3 yellow marbles, and 4 green marbles in a bag. Suppose one marble is selected. What is the probability of selecting an orange marble?
2/10= 1/5
100
What is the probability of rolling a number cube twice and having it land on a 1 both times?
1/36
100
Two red counters and two white counters are placed in a bag. What is the probability of pulling a red counter, followed by a white counter, without replacement?
2/4*2/3=4/12=1/3
100
An ice cream shop serves ice cream in 3 different containers: a plain cone, a waffle cone, or a cup. They offer chocolate, vanilla, and strawberry. Customers also select whether or not they want a cherry on top. How many possible combinations of ice creams can they make?
3*3*2= 18
200
Letter tiles A - Z are placed in a bag. What is the probability of pulling out the standard vowels?
5/26
200
Suppose a number cube is rolled. What is the probability of rolling a 4 or a 5?
2/6 = 1/3
200
A number cube is rolled and a spinner labeled A - E is spun. Find the probability of landing on a 3, then an E.
1/30
200
Clay's clothes closet contains 3 blue shirts, 10 white shirts, and 7 striped shirts. What is the probability that Clay will reach in and randomly select a white shirt followed by a striped shirt, without replacement?
10/20*7/19=70/380=7/38
200
A coin is flipped and a dice is rolled. How many possible outcomes are there?
2*6=12
300
DAILY DOUBLE!
Suppose a number cube is rolled. What is the probability of NOT rolling a 1 or a 2?
4/6 = 2/3
300
What is the probability that this spinner will land on pink or green?
4/8=1/2
300
DAILY DOUBLE!!
You flip a coin 7 times. What is the probability it lands on heads every time?
1/128
300
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 of getting two yellows in a row.
3/10* 2/9=6/90=1/15
400
Use a standard deck of 52 cards. What is the probability of pulling out a diamond?
13/52 =1/4
400
Rick takes two coins at random from the 3 quarters, 5 dimes, and 2 nickels in his pocket. What is the probability that he chooses a quarter, does not replace it, then chooses a dime?
3/10* 5/9=15/90=1/6