The January page of a year is shown. In how many months of that year do five Sundays occur?

A month has five Sundays when Sunday is among its first (length − 28) days. Starting days for the year: Jan Wed, Feb Sat, Mar Sat, Apr Tue, May Thu, Jun Sun, Jul Tue, Aug Fri, Sep Mon, Oct Wed, Nov Sat, Dec Mon. Five Sundays: March (31 days from Sat), June (from Sun), August (31 days from Fri) and November (30 days from Sat): 4. (January starts on Wednesday, so it has only four.)