Question

Find the probability that a leap year has 52 Sundays

Answer 1

if year start is from

Monday: 52 Sundays

Tuesday: 52 Sundays

Wednesday: 52 Sundays

Thursday: 52 Sundays

Friday: 52 Sundays

Saturday: 53 Sundays

Sunday: 53 Sundays

So, the probability of 52 Sundays:

$p=5/7$