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In a class of 40 social sciences students, 10 are not showing any covid-19 signs and every student of the remaining 30 has high fever, chest pain or both. If 15 have high fever and 25 have chest pain. If a student is selected randomly from this group, what is the likelihood that he/she has;

  1. High fever                                                                                               (2marks)
  2. Has chest pain                                                                                         (2marks)
  3. Has high fever and chest pain                                                                 (2marks)
  4. Has either high fever or chest pain                                                        
 Mar 29, 2022
 #1
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Here is a Venn diagram to get you started:

 

 Mar 29, 2022

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