Mathematics for IGCSE & O level - Probability (Section 5 - No. 20)
When tossing a fair coin twice, what is the probability of getting heads on both tosses?
1/2
1/4
1/3
2/3
Giải thích
Each toss is independent. P(Head) = 1/2. Therefore, P(Head and Head) = (1/2) * (1/2) = 1/4