If a-b+c-d=10 and a+b-c+d=-2, what is 2a? -2 8. -8 O 10

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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If a-b+c-d=10 and a+b-c+d=-2, what is 2a?
-2
8
-8
O 10
Transcribed Image Text:If a-b+c-d=10 and a+b-c+d=-2, what is 2a? -2 8 -8 O 10
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