1000 students were asked which modes of communication they use – email, text, or Facebook (messenger). These were the results: 830 use Facebook 680 use text 625 use email 600 use both Facebook and text 550 use both Facebook and email 350 use all three 40 use email only Question: How many use Facebook only, text only, both text and email, but not facebook, facebook and email, and does not use any of the three?

1000 students were asked which modes of communication they use – email, text, or Facebook (messenger). These were the results: 830 use Facebook 680 use text 625 use email 600 use both Facebook and text 550 use both Facebook and email 350 use all three 40 use email only Question: How many use Facebook only, text only, both text and email, but not facebook, facebook and email, and does not use any of the three?

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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6.2
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