Every 5th Sunday of the month (when the month even has five Sundays), the local church has a special co-educational activity planned, in place of Sunday school. How often, or on how many Sundays, does this happen each year?
Assume that if ever there’s a 53rd Sunday in the year, the activity is cancelled due to the church’s really tight budget so that there may always be 52 Sundays to deal with.
Answer
This takes place on four Sundays a year.
The year has 52 Sundays, and each month has a 1st, 2nd, 3rd and 4th Sunday. That totals 48, leaving 4 unaccounted for. These four must be the 5th Sundays.