Find the unknown in each item.  1. C (8,3)= 2. P (5,r)=__120__ 3. C (9,9)= 4. C (n,4)=15

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter8: Introduction To Functions
Section8.1: Equations In Two Variables
Problem 44WE
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Find the unknown in each item. 

1. C (8,3)=

2. P (5,r)=__120__

3. C (9,9)=

4. C (n,4)=15

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