• 8:
  1. (2,4), (6,9)
  2. 2, 4, 6
  3. (0,1), (1,3), (3,5), (5,7), (7,8), (8,9)
  4. 1, 3, 5, 7, 8
• 18: (2,.25), (-2,-.25)
• 36:
  1. 
  2. (-1,2), (1,-2)
  3. 
• 46: You're on your own!