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  1. even(X) :- X mod 2 is 0.
Success #stdin #stdout 0.03s 6204KB
comments (?)
stdin 
?- even(123).
stdout 
Standard output is empty
https://ideone.com/FVTSg
language:
Prolog (swi 7.6.4)
created:
14 years ago
visibility:
public

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