A bag contains red, white, blue balls. Write the sum of P (red), P (white) and P (blue ) balls.

Answer

To solve the problem, we need to find the sum of the probabilities of drawing a red ball, a white ball, and a blue ball from a bag containing these colored balls.

### Step-by-Step Solution:

1. **Understanding Probability**:
- Probability is defined as the number of favorable outcomes divided by the total number of outcomes.
- In this case, the favorable outcomes are the number of red, white, and blue balls.

2. **Identifying the Events**:
- Let \( P(\text{red}) \) be the probability of drawing a red ball.
- Let \( P(\text{white}) \) be the probability of drawing a white ball.
- Let \( P(\text{blue}) \) be the probability of drawing a blue ball.

3. **Using the Probability Rule**:
- According to the fundamental rule of probability, the sum of the probabilities of all possible outcomes (in this case, the colors of the balls) must equal 1.
- Therefore, we can write the equation:
\[ P(\text{red}) + P(\text{white}) + P(\text{blue}) = 1 \]

4. **Conclusion**:
- The sum of the probabilities of drawing a red ball, a white ball, and a blue ball is equal to 1.

### Final Answer:
\[ P(\text{red}) + P(\text{white}) + P(\text{blue}) = 1 \]