Not really my solution... just a slightly cheating version of @bmtran's.
Encode Roman Numerals
Project Euler: Problem 2, Sum of even Fibonacci
Project Euler: Problem 7, Nth prime
vectorization in N
Sophie Germain prime
Back to basics 12 - Input Arguments
Back to basics 23 - Triangular matrix
Back to basics 21 - Matrix replicating
Bottles of beer
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