Question: Prolog. Can anyone help? Thx. Write a predicate to find the greatest common divisor of two positive integers. ?- gcd (6, 12, D). D =
Prolog. Can anyone help? Thx.

Write a predicate to find the greatest common divisor of two positive integers. ?- gcd (6, 12, D). D = 6. ?- gcd (14, 21, D). D = 7. ?- gcd (1071, 462, D). D = 21
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