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www/statics/euler/euler_019_description.md

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+You are given the following information, but you may prefer to do some research for yourself.
+
+ - 1 Jan 1900 was a Monday.
+ - Thirty days has September,
+ - April, June and November.
+ - All the rest have thirty-one,
+ - Saving February alone,
+ - Which has twenty-eight, rain or shine.
+ - And on leap years, twenty-nine.
+ - A leap year occurs on any year evenly divisible by 4, but not on a century unless it is divisible by 400.
+
+How many Sundays fell on the first of the month during the twentieth century (1 Jan 1901 to 31 Dec 2000)?