Solution
A leap year has 366 days.
Then february has 29 days, 28+1.
So 4 weeks and 1 day.
4 weeks will have 4 Mondays.
Now we need 5 Mondays,so 1 left day should be monday to make 5 Mondays.
So probability of 1 day to be monday in 1 week =1/7.
Final Answer=1/7.