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⇱ GATE | CS | 2005 | TOC | Context free grammar | Question 55

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Consider the languages:

L1 = {anbncm | n, m > 0} 
L2 = {anbmcm | n, m > 0}

Which one of the following statements is FALSE?

L1 ∩ L2 is a context-free language

L1 U L2 is a context-free language

L1 and L2 are context-free language

L1 ∩ L2 is a context sensitive language

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