Check if sorted
Sum of first n terms of a harmonic progression
Find the position of first minimum value in an integer array with numbers
Mersenne Primes vs. All Primes
Big numbers, least significant digits
Rule of mixtures (composites) - weighted bound
Divisible by n, prime divisors (including powers)
Tic-Tac-Logic - Solution Checker
Scrabble Scores - 3
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