Question: Let L 1 = 1 n ;bin ( n ) , where bin ( n ) is the binary representation of n . Let L

Let L1=1n;bin(n), where bin(n) is the binary representation of n.
Let L2= The language of strings with alphabet {a,b,;} in the format x1;x2;dots;xn where each x is a
string of {a,b}, and each string occurs exactly twice.
Problem 2
Prove that L2 is not context-free.
Let L1=1n;bin(n), where bin(n) is the binary representation of n. Let

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