A bag contains 10 white and 15 black balls. Two balls are drawn in succession without replacement. What is the probability that first is white and second is black?

Explanation

To solve the problem, we need to find the probability that the first ball drawn is white and the second ball drawn is black. We will use the concept of conditional probability and the multiplication theorem.

### Step-by-Step Solution:

1. **Identify the Total Number of Balls:**
- The bag contains 10 white balls and 15 black balls.
- Total number of balls = 10 (white) + 15 (black) = 25 balls.

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