Which of the following is a precondition for a method that accepts a number n and computes the nth Fibonacci number?
A)n is a negative integer
B)n is a positive integer
C)n is greater than 1
D)n is an even integer

Question

Quizplus · Accepted Answer

The method for computing the nth Fibonacci number relies on the input being a positive integer. Negative integers and even integers are not relevant preconditions for this method, and while the Fibonacci sequence technically starts with 0 and 1, the computation of the 0th or 1st Fibonacci number can be included in the method itself. Therefore, the only necessary precondition is that n is a positive integer.

Which of the Following Is a Precondition for a Method