A mint prepares metallic calendars specifying months, dates and days in the form ofmonthly sheets (one plate for each month). How many types of February calendars should it prepare toserve for all the possibilities in the future year ?

Explanation

we can say that the total number of different calendars required will be equal to the number of different types of month February are possible.

Now, for the month February if the type of year is leap year there will be 29 days in February and 28 days otherwise.
So,Number of choices`=2`
Number of choices as per the first day of the month`=7`
so`=2xx7=14`

Thus, he should prepare 14 types of February calendars to serve for all the possibilities in the future years.