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Permutations and Combinations Explained: 8th Grade Math

Learn how to calculate permutations, combinations, and factorials for 8th-grade math students. Understand the steps involved in setting up combinations and how to manipulate factorials in solving mathematical problems. Practice with examples such as 6P4, 8P5, and 11P7 to enhance your skills.

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Permutations and Combinations Explained: 8th Grade Math

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  1. Permutations8thgrade

  2. = 9! 4! 9P5 Total # How many chosen Steps to setup combinations Write total number in numerator as factorial 2) Subtract two numbers & write in denominator as factorial

  3. Factorial (!) – 4! = 4 x 3 x 2 x 1 5! = 5 x 4 x 3 x 2 x 1

  4. To Solve: 9P5= 9! 4! 9 PRB ! ÷ 4 PRB ! =

  5. Try these: 6P4 = 6! = 360 2! 8P5 = 8! = 6,720 3! 11P7 = 11! = 1,663,200 4!

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