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Question

Which of the following cannot be filled in the blank below?
Statement: There are CFLs L1 nad L2 so that ___________is not a CFL.

a.

L1∩L2

b.

L1′

c.

L1*

d.

None of the mentioned

Answer: (c).L1*

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Q. Which of the following cannot be filled in the blank below? Statement: There are CFLs L1 nad L2 so that ___________is not a CFL.

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