A coin is tossed 3 times. Find the probability that all are heads.
The probability that all are heads is
(Type an integer or simplified fraction.)
Answer
Final Answer: The probability that all are heads is \( \boxed{\frac{1}{8}} \).
Step 1 ：A coin is tossed 3 times. We need to find the probability that all are heads.
Step 2 ：The probability of getting a head in a single toss of a fair coin is \( \frac{1}{2} \).
Step 3 ：Since the tosses are independent, the probability of getting heads in all three tosses is the product of the probabilities of getting a head in each individual toss.
Step 4 ：So, the probability of getting all heads is \( \frac{1}{2} \times \frac{1}{2} \times \frac{1}{2} = \frac{1}{8} \).
Step 5 ：Final Answer: The probability that all are heads is \( \boxed{\frac{1}{8}} \).
