A group of 48 students was surveyed regarding their use of certain operating systems: Windows, OS X, or Linux. 10 students used Windows, 23 students used OS X, 19 students used Linux. 6 of the students who used Windows also used OS X, 9 of the students who used OS X also used Linux, but no students used Linux and Windows. How many students did not use any of three operating systems?
A group of 48 students was surveyed regarding their use of certain operating systems: Windows, OS X, or Linux. 10 students used Windows, 23 students used OS X, 19 students used Linux. 6 of the students who used Windows also used OS X, 9 of the students who used OS X also used Linux, but no students used Linux and Windows. How many students did not use any of three operating systems?
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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A group of 48 students was surveyed regarding their use of certain operating systems : Windows, OS X, or Linux. 10 students used Windows, 23 students used OS X, 19 students used Linux. 6 of the students who used Windows also used OS X, 9 of the students who used OS X also used Linux, but no students used Linux and Windows. How many students did not use any of three operating systems?
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