A box contains 5 red balls and 5 blue balls. What is the minimum number of balls you need to pick to guarantee that you have at least 2 balls of the same color?
Q1. A box contains 5 red balls and 5 blue balls. What is the minimum number of balls you need to pick to guarantee that you have at least 2 balls of the same color?
Answer: 3
Explanation: To guarantee 2 balls of the same color, consider the worst-case scenario: you pick 1 red and 1 blue. The third pick will necessarily match one of the first two.