1
GATE CSE 2004
MCQ (Single Correct Answer)
+1
-0.3
The problems 3-SAT and 2-SAT are
A
both in P
B
both NP-complete
C
NP-complete and in P respectively
D
undecidable and NP-complete respectively
2
GATE CSE 2003
MCQ (Single Correct Answer)
+1
-0.3
Ram and Shyam have been asked to show that a certain problem Π is NP-complete. Ram shows a polynomial time reduction from the 3-SAT problem to Π, and Shyam shows a polynomial time reduction from Π to 3-SAT. Which of the following can be inferred from these reductions ?
A
Π is NP-hard but not NP-complete
B
Π is in NP, but is not NP-complete
C
Π is NP-complete
D
Π is neither NP-hard, nor in NP
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