A survey of 500 book buyers was conducted and the data was obtained; at Casa del Libro 150, Sótano 200 and 65 they bought at the two bookstores. How many people are Sótano's competition? a) 200b) 500c) 350d) 300

A First Course in Probability (10th Edition)
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Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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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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A survey of 500 book buyers was conducted and the data was obtained; at Casa del Libro 150, Sótano 200 and 65 they bought at the two bookstores.

How many people are Sótano's competition?

a) 200
b) 500
c) 350
d) 300

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