What are the chances that no two boys are sitting together for a photograph if there are 5 girls and 2 boys?
Q1. What are the chances that no two boys are sitting together for a photograph if there are 5 girls and 2 boys?
Answer: 05-Jul
Explanation: Arrange 5 girls in a row (5! ways), then 2 boys can be placed in 6 gaps (⁶P₂ = 30 ways). Total = 5! × 30 = 3600. Grand total = 7! = 5040. Probability = 3600/5040 = 5/7.