Set 1: Probability (Beginner)

**Choice B is the best answer.** P = favorable/total = 9/13 = 9/13

Explanation

Answer: B

PROBLEM

A bag contains 13 balls, 9 of which are red. What is the probability of randomly selecting a red ball?

13/9

9/13

✓ Correct

4/13

9/14

Detailed Explanation

Choice B is the best answer. P = favorable/total = 9/13 = 9/13

Why others are wrong:

A: 13/9 is incorrect because it does not satisfy the equation.

C: 4/13 is incorrect because it does not satisfy the equation.

D: 9/14 is incorrect because it does not satisfy the equation.