GATE | GATE-CS-2006 | Question 16

Let S be an NP-complete problem and Q and R be two other problems not known to be in NP. Q is polynomial time reducible to S and S is polynomial-time reducible to R. Which one of the following statements is true?
(A) R is NP-complete
(B) R is NP-hard
(C) Q is NP-complete
(D) Q is NP-hard

Answer: (B)
Explanation: See question 1 of https://www.geeksforgeeks.org/data-structures-and-algorithms-set-20/amp/
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