Three of them, in 1994, 2005 and 2011.
2012 is a leap year starting on a Sunday. The Friday 13ths in this year occur in January, April and July. So there will be 3 of them.
There will be one Friday the 13th in 2010 - in August.
on average, 17.2
Just one, in August.
There is one in September and one in December.
The maximum is three.
Only 1. It's on Friday, 13 June, 2014.
The last time there were three Friday the 13ths in one year was in 2015. The next time this will happen is in 2026.
Three, in February, March and November.
There is one in September and one in December.
There is either one, two or three in every year.
Yes, just one. The 13th of October 1944 was a Friday.