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1 336 PERMUTATIONS with RESTRICTIONS and REPETITIONS

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Page 1: PERMUTATIONS with RESTRICTIONS and REPETITIONSprecal40s.weebly.com/uploads/2/4/7/3/2473487/...RESTRICTIONS and REPETITIONS 2 n! a!b!c! Permutations with identical objects. where n

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336

PERMUTATIONS with RESTRICTIONS and REPETITIONS

Page 2: PERMUTATIONS with RESTRICTIONS and REPETITIONSprecal40s.weebly.com/uploads/2/4/7/3/2473487/...RESTRICTIONS and REPETITIONS 2 n! a!b!c! Permutations with identical objects. where n

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n!a!b!c!

Permutations with identical objects. 

where n is a set of objects with

a      one kindb     anotherc     another

etc. 

Page 3: PERMUTATIONS with RESTRICTIONS and REPETITIONSprecal40s.weebly.com/uploads/2/4/7/3/2473487/...RESTRICTIONS and REPETITIONS 2 n! a!b!c! Permutations with identical objects. where n

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How many different 5­digit numbers can be made arranging

4  6  1  6  4 30 ways

Page 4: PERMUTATIONS with RESTRICTIONS and REPETITIONSprecal40s.weebly.com/uploads/2/4/7/3/2473487/...RESTRICTIONS and REPETITIONS 2 n! a!b!c! Permutations with identical objects. where n

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How many different "words" can be made from theletters in the word MISSISSIPPI?   

Page 5: PERMUTATIONS with RESTRICTIONS and REPETITIONSprecal40s.weebly.com/uploads/2/4/7/3/2473487/...RESTRICTIONS and REPETITIONS 2 n! a!b!c! Permutations with identical objects. where n

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How many permutations of 8 letters can be made from 

P  A  R  A  L  L  E  L

Page 6: PERMUTATIONS with RESTRICTIONS and REPETITIONSprecal40s.weebly.com/uploads/2/4/7/3/2473487/...RESTRICTIONS and REPETITIONS 2 n! a!b!c! Permutations with identical objects. where n

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How many different "words" can you make from the letters in the word STATISTICS?

Page 7: PERMUTATIONS with RESTRICTIONS and REPETITIONSprecal40s.weebly.com/uploads/2/4/7/3/2473487/...RESTRICTIONS and REPETITIONS 2 n! a!b!c! Permutations with identical objects. where n

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Camy, Yvanne, Mark, Arlyn, and Roger are sitting in the stands at a concert together. 

a) How many ways can they be seated? 

5! = 120 ways

Page 8: PERMUTATIONS with RESTRICTIONS and REPETITIONSprecal40s.weebly.com/uploads/2/4/7/3/2473487/...RESTRICTIONS and REPETITIONS 2 n! a!b!c! Permutations with identical objects. where n

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c) What if Arlyn and Roger must not sit together? 

b) What if Arlyn and Roger must sit together? 

Page 9: PERMUTATIONS with RESTRICTIONS and REPETITIONSprecal40s.weebly.com/uploads/2/4/7/3/2473487/...RESTRICTIONS and REPETITIONS 2 n! a!b!c! Permutations with identical objects. where n

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HOMEWORKEX.29; #1­9

Page 10: PERMUTATIONS with RESTRICTIONS and REPETITIONSprecal40s.weebly.com/uploads/2/4/7/3/2473487/...RESTRICTIONS and REPETITIONS 2 n! a!b!c! Permutations with identical objects. where n

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Poker fun with your best friends by flickr user coltfan909