# Answer on Prolog Question for Oleg

Question #68752

num(Y, Y).

num(X, Y) :- X > 0, X1 is X - 2, num(X1, Y).

How many solutions - num(5, X)?

num(X, Y) :- X > 0, X1 is X - 2, num(X1, Y).

How many solutions - num(5, X)?

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