1. In a class of 30 students, 7 have black hair and 24 are right handed. If 2
   students neither have black hair nor are they right handed, how many
   students:
   a) have both black hair and are right handed.
   b) have black hair but are not right handed?
   5. 46% of people in a town ride a bicycle and 45% ride a motor bike. 16%
   ride neither a bicycle nor a motor bike.
   a) Illustrate this information on a Venn diagram
   b) How many people ride:
   i) both a bicycle and a motor bike
   ii) either a bicycle or a motor bike or both
   iv) a bicycle only
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