Jelly, 10 bytes
ṭŒcg/€ċ1=1
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A monadic link taking a list of three positive integers and returning 1 if they are Borromean coprimes and 0 if not. TIO link checks all of the test c...
Jelly, 45 bytes
L‘ḃ5MḢ;‘$œṖƲḅ5aị¥⁸N1¦Sṭ
“¢¦½2d‘Çȷ6¡iḃ5ị“IVXLC
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A pair of links that takes an integer as its argument and returns a string with the shortest generalised Roman num...
