Introduction to Programming
		      Assignment 1, 17 Aug, 2004
                         Due Tue 24 Aug, 2004

1. Define the function "mostlyTrue" that takes as input three
   values of type Bool and returns True if at least two them are
   True.  For instance:
  
          mostlyTrue True True False = True
          mostlyTrue False True False = False

2. Define the function "bestTwo" that takes as input three Int
   values and returns the sum of the largest two of the three.
   For instance:

          bestTwo 3 1 2 = 5
          bestTwo 3 4 3 = 7

3. Define the function "find" that takes as input x (an Int) and
   ys (a list of Int) and returns True if x appears in ys. For
   instance:

          find 7 [8,9]   = False
          find 7 [8,7,9] = True

4. Define the function "findboth" that takes as input x, y (both
   Int) and za (a list of Int) and returns True if both x and y
   appear in zs. For instance:

          findboth 7 8 [8,9]   = False
          findboth 7 8 [8,7,9] = True

5. Define the function "findall" that takes as input xs and ys
   (both list of Int) and returns True if every Int in xs appears
   in ys.  For instance:

          findall [] [1,3] = True
          findall [3,4] [1,3] =  False
          findall [3,4] [1,3,4,1] = True

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