Easy-peasy stuff. It’s like counting a jar of pennies. Every century STARTS with ‘01’ and ENDS with the ‘00,’ (like 100 pennies make a dollar). Each century has 100 years. The First century (like the first dollar) would be year 1 – year 100. So the 18th century (or 18th dollar) would be 1701-1800 (like $17.01-$18.00). See? Easy-peasy.
Mutiny! They be mutiny-ing! Over pie-rat booty! Har!