📦 Anurag-05-prog / Prolog

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20# Q. Write a PROLOG program to determine the n-th Fibonacci number

## Code

fib(0,1).

fib(1,1).

fib(N,F):-
    N > 1,
    N1 is N - 1,
    N2 is N - 2,
    fib(N1,F1),
    fib(N2,F2),
    F is F1 + F2.

## Query

fib(5,F).