On the first day of math problem, a hen laid eggs.
No eggs were laid on New Year's Day in 2009, and then one egg was laid every day for two consecutive days, that is, two eggs every three days. One ***365 days in 2009, divided by 3, equals 12 1+2. I didn't lay an egg for the remaining two days, and then I laid an egg, so I kept * * 10.