Question: Determine whether or not the following languages are context - free: a . L = { anwwRbn : n > = 0 , w in

Determine whether or not the following languages are context-free:
a. L ={anwwRbn : n >=0, w in {a, b}*}.
b. L ={anbjanbj : n >=0, j >=0}.
c. L ={anbjajbn : n >=0, j >=0}.

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