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(10 pts.) Now assume that L and L2 are NP-complete languages. Which of the following statements are true? LiU L2 is NP-comple

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Answer #1

If L1 and L2 are NP languages , then we can say that L1 \bigcup L2 and L1 \bigcap L2 are in NP. But when L1 and L2 are NP-Complete languages, then L1 \bigcup L2 and L1 \bigcap L2 need not necessarily be NP-Complete.

So L1\L2 is NP-Complete. So, here option 3 can be chose as appropriate answer.

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