Using the rules for counting permutations and combinations of r things out ofn things. n! n! P(n,r) =- (n-r)! C(n,r) = and %3D r!(n-r)!" Answer the following questions. Show your calculations. a) In how many ways can a president, vice-president, and secretary be picked from the 19 members of a club? b) In how many ways can a committee with 3 members be picked from a club with 19 members?

Using the rules for counting permutations and combinations of r things out ofn things. n! n! P(n,r) =- (n-r)! C(n,r) = and %3D r!(n-r)!" Answer the following questions. Show your calculations. a) In how many ways can a president, vice-president, and secretary be picked from the 19 members of a club? b) In how many ways can a committee with 3 members be picked from a club with 19 members?

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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