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1. Use the pumping lemma for regular languages to prove L is not regular where L = {1^r | r is a prime number}. 2.
1. Use the pumping lemma for regular languages to prove L is not regular where L = {1^r | r is a prime number}.
2. Use the pumping lemma for CFG to show L = {1^r | r is a prime number} above is not a CFL. (This also implies the answer to problem 1, but do problem 1 anyhow.)
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