Set 1: Probability (Intermediate)

[Variation 3] **Choice D is the best answer.** P(all heads) = (1/2)^3 = 1/8

Explanation

Answer: D

PROBLEM

Researchers have observed that a fair coin is flipped 3 times. What is the probability of getting all heads?

A fair coin is flipped 3 times. What is the probability of getting all heads?

3/8

1/4

1/16

1/8

✓ Correct

Detailed Explanation

[Variation 3] Choice D is the best answer. P(all heads) = (1/2)^3 = 1/8

Why others are wrong:

A: 3/8 is incorrect because it does not satisfy the equation.

B: 1/4 is incorrect because it does not satisfy the equation.

C: 1/16 is incorrect because it does not satisfy the equation.