If two coins are tossed, what is the probability of getting at least one head?
Practice Questions
Q1
If two coins are tossed, what is the probability of getting at least one head?
1/4
1/2
3/4
1
Questions & Step-by-Step Solutions
If two coins are tossed, what is the probability of getting at least one head?
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), and TT (both tails).
Step 3: Count the total number of outcomes. There are 4 outcomes: HH, HT, TH, TT.
Step 4: Identify the outcomes that have at least one head. The outcomes with at least one head are: HH, HT, and 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. Probability = (Number of favorable outcomes) / (Total outcomes) = 3 / 4.
