A factory's quality control team detects a defect in every 5th product. If they inspected 20 products, how many defects did they find?
Q1. A factory's quality control team detects a defect in every 5th product. If they inspected 20 products, how many defects did they find?
Answer: 4
Explanation: Defects occur every 5th product, so at 5th, 10th, 15th, and 20th products, totaling 4 defects