A recursive method that computes the number of groups of k out of n things has the precondition that ______.
a. n is a positive number and k is a nonnegative number
b. n is a nonnegative number and k is a positive number
c. n and k are nonnegative numbers
d. n and k are positive numbers
c. n and k are nonnegative numbers
Computer Science & Information Technology
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Computer Science & Information Technology
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Computer Science & Information Technology