6

Set 3: Probability (Beginner)

Explanation

Answer: C

PROBLEM

A bag contains 18 balls, 9 of which are green. What is the probability of randomly selecting a green ball?

A bag contains 18 balls, 9 of which are green. What is the probability of randomly selecting a green ball?

A.

17/18

B.

1/18

C.

1/2

✓ Correct
D.

2/1

Detailed Explanation

Choice C is the best answer. P = favorable/total = 9/18 = 1/2

Why others are wrong:
A: 17/18 is incorrect because it does not satisfy the equation.
B: 1/18 is incorrect because it does not satisfy the equation.
D: 2/1 is incorrect because it does not satisfy the equation.