Thirty days are in September, April, June and November. Some months are of thirty one days. A
month is chosen at random. Then its probability of having exactly three days less than maximum of 31 is

• 3/48 because there are 3 months of february having 28 days in 4 years or 48 months .
  so probability of having exactly three days less than maximum of 31 is 3/48=1/16
• 12 years agoHelpfull: Yes(47) No(25)
• 1/12......because among 12 months only feb is having 28 dayzzz
• 12 years agoHelpfull: Yes(20) No(4)
• aren't they asking for exactly 3 days less?? y do v have to take other months into consideration?
• 12 years agoHelpfull: Yes(5) No(6)
• 1/8, since the current year may or may not be a leap year, if not a leap year then, 1/12 else 1/24, therefore, 1/12+1/24 = 1/8
• 9 years agoHelpfull: Yes(0) No(0)