Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 12 - Data Analysis and Probability - 12-6 Permutations and Combinations - Practice and Problem-Solving Exercises - Page 755: 44

Answer

$_{11}$C$_{5}$ is greater

Work Step by Step

You have $_{11}$C$_{5}$ and $_{11}$C$_{8}$.Solve to find out which is larger: A: $_{11}$C$_{5}$=$\frac{11!}{5!(11-5)!}$ -simplify like terms- $_{11}$C$_{5}$=$\frac{11!}{5! (6!)}$ -write using factorial- $_{11}$C$_{5}$=$\frac{11*10*9*8*7*6*5*4*3*2*1}{(5*4*3*2*1)(6*5*4*3*2*1)}$ -simplify- $_{11}$C$_{5}$=462 B: $_{11}$C$_{8}$=$\frac{11!}{8!(11-8)!}$ -simplify like terms- $_{11}$C$_{8}$=$\frac{11!}{8! (3!)}$ -write using factorial- $_{11}$C$_{8}$=$\frac{11*10*9*8*7*6*5*4*3*2*1}{(8*7*6*5*4*3*2*1)(3*2*1)}$ -simplify- $_{11}$C$_{8}$=165 $_{11}$C$_{5}$ is greater
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