Probability

Concept:A leap year has 366 days, which is 52 weeks and 2 extra days. For 53 Saturdays, one of the extra days must be a Saturday.Explanation:A leap year has 366 days = 52 weeks (364 days) + 2 extra days.The 2 extra days can be any of the 7 consecutive pairs: (Sun, Mon), (Mon, Tue), (Tue, Wed), (Wed, Thu), (Thu, Fri), (Fri, Sat), (Sat, Sun).Total number of equally likely outcomes = 7.Favorable outcomes where Saturday appears: (Fri, Sat) and (Sat, Sun) → 2 outcomes.Probability = $\frac{2}{7}$.Answer:$\frac{2}{7}$