1. **State the problem:** We have seven pins with point values 13, 57, 8, 39, 48, 24, and 47. We need to find which three pins add up to exactly 100 points. 2. **Approach:** We will check combinations of three pins and sum their values. 3. **Check combinations:** - 13 + 57 + 8 = 78 - 13 + 57 + 39 = 109 - 13 + 57 + 48 = 118 - 13 + 57 + 24 = 94 - 13 + 57 + 47 = 117 - 13 + 8 + 39 = 60 - 13 + 8 + 48 = 69 - 13 + 8 + 24 = 45 - 13 + 8 + 47 = 68 - 13 + 39 + 48 = 100 \quad \leftarrow \text{This matches!} 4. **Verify:** The pins with values 13, 39, and 48 sum to exactly 100. 5. **Answer:** The three pins to knock over are those with points 13, 39, and 48. This satisfies the problem requirement.