Two coins are tossed. What is the probability of getting at least one head?
Practice Questions
1 question
Q1
Two coins are tossed. What is the probability of getting at least one head?
1/4
1/2
3/4
1/3
The possible outcomes are HH, HT, TH, TT. The outcomes with at least one head are HH, HT, TH. So, the probability is 3/4.
Questions & Step-by-step Solutions
1 item
Q
Q: Two coins are tossed. What is the probability of getting at least one head?
Solution: The possible outcomes are HH, HT, TH, TT. The outcomes with at least one head are HH, HT, TH. So, the probability is 3/4.
Steps: 6
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.
