5

Set 1: Probability (Beginner)

Explanation

Answer: A

PROBLEM

A bag contains 17 balls, 15 of which are blue. What is the probability of randomly selecting a blue ball?

A bag contains 17 balls, 15 of which are blue. What is the probability of randomly selecting a blue ball?

A.

15/17

✓ Correct
B.

15/18

C.

2/17

D.

17/15

Detailed Explanation

Choice A is the best answer. P = favorable/total = 15/17 = 15/17

Why others are wrong:
B: 15/18 is incorrect because it does not satisfy the equation.
C: 2/17 is incorrect because it does not satisfy the equation.
D: 17/15 is incorrect because it does not satisfy the equation.