AMC 8 Probability & Counting

Question 1

A bag has 3 red and 5 blue marbles. What is the probability of randomly drawing a red marble?

Accepted Answer

3/8

Answer

3/5

Answer

5/8

Answer

1/3

Question 2

How many ways can you arrange the letters in the word CAT?

Accepted Answer

6

Answer

3

Answer

9

Answer

12

Question 3

A fair coin is tossed twice. What is the probability of getting two heads?

Accepted Answer

1/4

Answer

1/2

Answer

1/3

Answer

2/3

Question 4

How many 2-digit numbers can be formed using digits 1, 3, 5, 7 if repetition is allowed?

Accepted Answer

16

Answer

8

Answer

12

Answer

20

Question 5

A standard six-sided die is rolled. What is the probability of rolling a number greater than 4?

Accepted Answer

1/3

Answer

1/6

Answer

1/2

Answer

2/3

Question 6

From a group of 5 students, in how many ways can 2 students be chosen for a committee?

Accepted Answer

10

Answer

5

Answer

8

Answer

20

A bag has 3 red and 5 blue marbles.What is the probability of randomly drawing a red marble?