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?

<p>To establish relationships between predicates (B)</p> Signup and view all the answers

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

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

What is the purpose of unification in Prolog?

<p>To establish a connection between predicates (D)</p> Signup and view all the answers

What is the main idea behind Prolog?

<p>Expressing logic as relations (D)</p> Signup and view all the answers

How does Prolog deduce new facts?

<p>Through logical deductions about the described situation (B)</p> Signup and view all the answers

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

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

In Prolog, what is a Knowledge Base composed of?

<p>Facts, rules, and an inference engine (D)</p> Signup and view all the answers

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

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

What does the operator == signify in Prolog?

<p>Inequality check (C)</p> Signup and view all the answers

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

<p>/ (C)</p> Signup and view all the answers

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

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

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

<p>It stands for exponentiation. (A)</p> Signup and view all the answers

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