1.
Dave, Shareem, Li, and Katlin are deciding which two players will play the first game of checkers. They put their names into a hat and pull out two at random. What is the probability that the pair includes Katlin?
A.
B.
C.
D.
Hint
2.
All whole-number pairs with a sum of 30 are placed into a hat. How many pairs are there?
A.
30
B.
12
C.
15
D.
16
Hint
3.
Suppose you spin one spinner numbered 1 to 3 and another spinner numbered 1 to 5, and multiply the two outcomes. How many possible number pairs can you roll?
A.
8
B.
15
C.
20
D.
3
Hint
4.
Suppose you roll two 10-sided dice with faces numbered 1 to 10. How many possible number pairs can you roll?
A.
50
B.
10
C.
75
D.
100
Hint
5.
To win the
2-of-7
lottery game, players must match two numbers from 1 to 7 with those selected in a random drawing. What is the probability of winning the game if order did not matter?
A.
B.
C.
D.
Hint
6.
In the three-team playoff structure below, what is the probability that Team A will win assuming every team has an equal chance of winning?
A.
B.
C.
D.
Hint