I got tired of solving these problems. So, I just wrote a solution that works for everything.
Find all elements less than 0 or greater than 10 and replace them with NaN
Return elements unique to either input
Find nth maximum
Sum of the Matrix Elements
Divisible by 15
I Plead the Fifth
Self-similarity 2 - Every third term
Lights Out 7 - 5x5, x moves
Mersenne Primes vs. All Primes
Lights Out 5 - 5x5, 10 moves
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