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Solutions

1. Answer:
   1. 
   2. 
   3. 
   4. 
      
      
3. Answer:
   
   1. ¬(p ∧ r) ∨ s
   2. (p ∨ q) ∧ (r ∨ q)
      
      
5. Answer: 2⁴  = 16 rows