so good solutions
Make a checkerboard matrix
Back and Forth Rows
given 3 sides, find area of this triangle
Project Euler: Problem 7, Nth prime
Concatenate two strings
Self-similarity 1 - Every other term
Lights Out 4 - 5x5, 8 moves
Mersenne Primes vs. All Primes
Rumis Scorer 1
Scrabble Scores - 4
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