If you flip a coin three times, the possible outcomes are HHH, HHT, HTH, HTT, THH, THT, TTH, TTT. What is the probability of getting at least two tails?
A. 1/2
B. 2/3
C. 3/4
D. 4/9
mY ANSWER IS A
Agree.
To calculate the probability of getting at least two tails when flipping a coin three times, we need to count the number of favorable outcomes and divide it by the total number of possible outcomes.
The favorable outcomes are HHT, HTH, THH, TTH, THT, TTT (6 outcomes).
The total number of possible outcomes is 2^3 = 8.
Therefore, the probability of getting at least two tails is 6/8, which simplifies to 3/4.
So the correct answer is C. 3/4.
To calculate the probability of getting at least two tails when flipping a coin three times, you need to count the number of favorable outcomes and divide it by the total number of possible outcomes.
Here's how you can get the answer:
1. Count the number of favorable outcomes:
In this case, we want to calculate the probability of getting at least two tails. So, the favorable outcomes would be HHT, HTH, THH, and TTT. There are four favorable outcomes.
2. Count the total number of possible outcomes:
When flipping a coin three times, there are 2 possible outcomes for each individual flip (heads or tails). Since there are 3 flips, the total number of possible outcomes is 2^3 = 8.
3. Calculate the probability:
To find the probability, divide the number of favorable outcomes by the total number of possible outcomes:
Probability = favorable outcomes / total outcomes
Probability = 4 / 8
Probability = 1/2
Therefore, the correct answer is A. 1/2.