Fatto generale: 615 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 615 is the trinomial coefficient T(10,6).
Trivia: 615 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: September 6th is the day in 1492 that Christopher Columbus sails from La Gomera in the Canary Islands, his final port of call before crossing the Atlantic for the first time.