Write a prolog function, average(X,Y), that takes a list (X) of integer values as input and returns the average of the values of X in variable Y. Assume that the list contains at least one element. Examples: average([4,5,51],Y) should return Y=20. average([4,5],Y) should return Y=4.5.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Write a prolog function, average(X,Y), that takes a list (X) of integer values as input and returns
the average of the values of X in variable Y. Assume that the list contains at least one element.
Examples:
average([4,5,51],Y) should return Y=20.
average([4,5],Y) should return Y=4.5.

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