Two coins are tossed. What is the probability of getting at least one head?
Practice Questions
Q1
Two coins are tossed. What is the probability of getting at least one head?
1/4
1/2
3/4
1/3
Questions & Step-by-Step Solutions
Two coins are tossed. What is the probability of getting at least one head?
Correct Answer: 3/4
Step 1: Understand that we are tossing two coins.
Step 2: List all possible outcomes when tossing two coins. The outcomes are: HH (both heads), HT (first head, second tail), TH (first tail, second head), TT (both tails).
Step 3: Count the total number of outcomes. There are 4 outcomes: HH, HT, TH, TT.
Step 4: Identify which outcomes have at least one head. The outcomes with at least one head are: HH, HT, TH.
Step 5: Count the number of outcomes with at least one head. There are 3 outcomes: HH, HT, TH.
Step 6: Calculate the probability of getting at least one head. The probability is the number of favorable outcomes (3) divided by the total number of outcomes (4). So, the probability is 3/4.
