Many people believe Friday the 13th will be an unlucky day. Is it possible that there is no Friday the 13th through the whole year. How many Friday's at the 13th can we have in a year at most?
Can you calculate you out?

Question

anonymous · Answer

here is another one @AidenS

ganeshie8 · Answer

requires number theory

anonymous · Answer

since the week is 7 days and the months is not a multiple of 7   then  you have 12 days a year a 13   so 13/7=1.85

anonymous · Answer

at less one Friday 13 a year and the most is 2