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CBSE Class 11-science Answered

A mint prepares metallic calendars specifying months, dates and days in the form of monthly sheets (one plate for each month). How many types of February calendars should he prepare to serve for all the possibilities in the future years?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
answered-by-expert Expert Answer

The mint has to perform two jobs:

 

1)     selecting the number of days in the February month i.e., 28 or 29

2)     selecting the first day of February month.

 

The first job can be completed in 2 ways while second job can be completed in 7 ways by selecting any one of the seven days of a week.

Thus, the required number of plates = 2 x 7 = 14

Answered by | 04 Jun, 2014, 03:23: PM

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