4) In a survey of Senior High School students, 64 had like academic track, 45 had like sports track, 78 had like TVL, 30 had like academic and sport, 26 had like academic track and TVL, 23 had like sports and TVL and 12 had like all the three tracks. Find how many had like one course only. 5) The school discovered that 112 of its 190 students watch television, 113 listens to the radio, and 150 use mobile phones. In addition, 75 people use television and mobile phones, 95 people use television and radio, 85 people use radio and mobile phones, and 70 people use all three. How many people solely used their phones? How many people utilized television and radio instead of mobile phones?
4) In a survey of Senior High School students, 64 had like academic track, 45 had like sports track, 78 had like TVL, 30 had like academic and sport, 26 had like academic track and TVL, 23 had like sports and TVL and 12 had like all the three tracks. Find how many had like one course only. 5) The school discovered that 112 of its 190 students watch television, 113 listens to the radio, and 150 use mobile phones. In addition, 75 people use television and mobile phones, 95 people use television and radio, 85 people use radio and mobile phones, and 70 people use all three. How many people solely used their phones? How many people utilized television and radio instead of mobile phones?
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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