QUESTION 9 Select an appropriate formula to calculate the number of described permutations and combinations. n! Permutations of r elements from the set of n distinct elements, with no repetition allowed. A. r!(n – r)! Combinations of r elements from the set with n distinct elements, В. C(r+n - 1, r) with no repetition allowed. n! r- permutations of n different types of elements with repetition С. allowed (n – r)! r- combinations of n different types of elements with repetition allowed. D.n"

QUESTION 9 Select an appropriate formula to calculate the number of described permutations and combinations. n! Permutations of r elements from the set of n distinct elements, with no repetition allowed. A. r!(n – r)! Combinations of r elements from the set with n distinct elements, В. C(r+n - 1, r) with no repetition allowed. n! r- permutations of n different types of elements with repetition С. allowed (n – r)! r- combinations of n different types of elements with repetition allowed. D.n"

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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