In a function, girls were allowed to wear only red, blue, or black dresses. If 15 girls were wearing red, 10 girls were wearing blue, and 20 girls were wearing black, then the probability that a girl selected at random was not wearing a black dress is:

Question

Accepted Answer

1. **Calculate the total number of girls:**  
   - Total = Girls wearing red + Girls wearing blue + Girls wearing black:  
     $$
     15 + 10 + 20 = 45.
     $$

2. **Calculate the number of girls not wearing black dresses:**  
   - Girls not wearing black = Girls wearing red + Girls wearing blue:  
     $$
     15 + 10 = 25.
     $$

3. **Find the probability of not wearing a black dress:**  
   - Probability = $$\frac{	ext{Number of favorable outcomes}}{	ext{Total outcomes}}$$:  
     $$
     	ext{Probability} = \frac{25}{45} = \frac{5}{9}.
     $$

Thus, the probability that a girl selected at random was **not wearing a black dress** is **$$\frac{5}{9}$$**, and the correct answer is **(c)**.

Answer

Answer

Answer