Question: Question 4: For the next problems say yes or no and explain your answer. The answer can also be: this is not known (open problem).

Question 4: For the next problems say yes or no and explain your answer. The answer can also be: this is not known (open problem). 1 1. Say that a problem Q ? NP C and there is a polynomial reduction from Q to a problem R, then R ? NP C. 2. Every Co ? NP C problem is decidable. 3. If we know that a problem Q 6? NP C, then Q ? P. 4. Say that in the Subset Sum problem all numbers are smaller than n 7 . Then the Subset Sum problem becomes polynomial.

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