Write a function to determine if a number is divisible by 15. If a number is divisible by 3 and divisible by 5, then it is divisible by 15.
Previous problem: divisible by 14. Next problem divisible by 16.
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Shortest solution (so far) that keeps to the spirit of the challenge. Code is also easy to read.
Another short solution that keeps to the spirit of the challenge.
Sums with Excluded Digits
Distance walked 1D
Return unique values without sorting
Is A the inverse of B?
Lights Out 12 - 5x5, three stages, <7 moves
Lights Out 24 - m x n, x moves
Divisible by 13
Lights Out 7 - 5x5, x moves
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