Incorrect
Explanation
There can be as many as three Friday the 13ths in a single calendar year; either in February, March, and November in a common year starting on Thursday (such as 2009, 2015, or 2026), or January, April, and July in a leap year starting on Sunday.
Solve this puzzle
60 sheep went down a path, 30 sheep went after that, 6 and 7, twice 11, 3 and 2 is how much?