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Prolog Constants and Operators Quiz

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Questions and Answers

In Prolog, what does a fact represent?

A rule that does not have the right-hand side

A logical operator used for unification

A statement with an upper-case variable as the predicate (correct)

A complex statement involving arithmetic operations

What does the Prolog query 'cloudy(X)' aim to find?

The number of 'cloudy' predicates in the KB

The value of X that makes the 'cloudy' predicate true (correct)

The arithmetic result of 'cloudy' operation

The logical consequence of 'cloudy' predicate

What happens when Prolog cannot find any more alternative answers?

It stops the execution and outputs an error message

It outputs 'no' to indicate no more alternative answers (correct)

It continues searching indefinitely until a solution is found

It prompts the user for additional input

What is a role of a rule in Prolog?

To establish relationships between predicates (B) Signup and view all the answers

In Prolog, what does the symbol ':-' between 'head' and 'body' represent?

It signifies implication from body to head (A) Signup and view all the answers

What is the purpose of unification in Prolog?

To establish a connection between predicates (D) Signup and view all the answers

What is the main idea behind Prolog?

Expressing logic as relations (D) Signup and view all the answers

How does Prolog deduce new facts?

Through logical deductions about the described situation (B) Signup and view all the answers

What is the main role of an inference engine in Prolog?

Answering questions based on knowledge base and rules (C) Signup and view all the answers

In Prolog, what is a Knowledge Base composed of?

Facts, rules, and an inference engine (D) Signup and view all the answers

In Prolog, which of the following is true about constants?

They can begin with a lowercase letter or be enclosed in single quotes. (B) Signup and view all the answers

What does the operator == signify in Prolog?

Inequality check (C) Signup and view all the answers

Which arithmetic operator is used to perform real division in Prolog?

/ (C) Signup and view all the answers

What is the purpose of the operator =:= in Prolog?

It compares arithmetic expressions for equality. (C) Signup and view all the answers

Which of the following is true about the operator ** in Prolog?

It stands for exponentiation. (A) Signup and view all the answers