Question

What is the probability of having $53$ Mondays in a leap year?

Answer 1

these are 366 days in a leap year. Out of which these are 52 weeks and 2 extra days.

$\Rightarrow$ These will be 52 Mondays.

from the two extra days,

probability of getting a Monday $=\frac{2}{7}.$

Thus probability of having 53 Mondays in a leap year $=\frac{2}{7}$