1. The problem statement, all variables and given/known data A year has 53 Sundays. What is the conditional probability that it is a leap year. 2. Relevant equations None that I can think of. 3. The attempt at a solution I tried by knowing that a leap year has 366 days. Next we can note that the remaining 2 days could be sunday and monday, monday and tuesday, .... and saturday and sunday. Sunday appears 2 out of 7 times, so the answer I got was 2/7. Is that correct or did I do something wrong?