In a certain town, 40% of the men have brown hair, 25% have brown eyes, and 15% have both brown hair and brown eyes. A man is selected at random from the town. Calculate the probability that he has brown hair or brown eyes.
0.4
0.65
0.5
0.1
To calculate the probability that the man selected has brown hair or brown eyes, we can use the formula:
P(A or B) = P(A) + P(B) - P(A and B)
Where:
- P(A) is the probability of having brown hair (0.4)
- P(B) is the probability of having brown eyes (0.25)
- P(A and B) is the probability of having both brown hair and brown eyes (0.15)
So, the probability of the man selected having brown hair or brown eyes is:
P(brown hair or brown eyes) = 0.4 + 0.25 - 0.15 = 0.5
Therefore, the probability is 0.5.