date and time

Max was 25 years old in 2011 what year was he born? Year of Birth = Year - Age in Year Year of Birth = 2011 - 25 Year of Birth = 1986

What is the probability that a month chosen at random has less than 31 days? Months with 31 days: January March May July August October December 7 months out of 12 have 31 days, so our probability is 7/12