Math 22: A Friday occurring on the 13th day of any month
is considered to be a day of bad luck. The fear of Friday the 13th is called paraskavedekatriaphobia, a specialized form of triskaidekaphobia, a phobia
(fear) of the number thirteen. How many times will Friday the 13th occur
in the year 2007?
Answer
Twice, April 13, 2007 and July 13, 2007