You flip a fair coin 10 times. What is the probability of getting exactly 5 heads?

You flip a fair coin 10 times. What is the probability of getting exactly 5 heads?

Approach: Use binomial probability formula. Each flip is independent with p=0.5.

C(10,5) * (0.5)^5 * (0.5)^5 = 252 * (1/1024) = 63/256 ≈ 0.2461

Follow-up: What is the probability of getting at least 5 heads?

Key concepts: binomial distribution, combinations, independent events.