A mint prepares metallic calenders specifying months, dates, days in the form of monthly sheets ( one plate for each month). How many types of calenders should it prepare to serve for all the possibilities in the future years

Answers (1)

Each day of the year has two known facts:
1-Starting day of the year
2-Whether it is a leap year or not.

For 1-We have 7 choices. Namely the seven days of the week.
For 2-We have 2 choices. To be it a leap year or not.

	herefore in: total: we: have: :7*2=14: choices

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