In a department of administrative officers, a survey was conducted regarding specialized training in three skills: Cyber Security (), Data Analytics (), and Disaster Management (). The survey revealed the following data:
- officers are trained in Cyber Security
- officers are trained in Data Analytics
- officers are trained in Disaster Management
- officers are trained in both Cyber Security and Data Analytics
- officers are trained in both Data Analytics and Disaster Management
- officers are trained in both Cyber Security and Disaster Management
- officers are trained in all three areas
Based on this information, which of the following statements are correct?
- The number of officers trained only in Cyber Security is .Cevap
- BThe number of officers trained in exactly two of these subjects is .
- The number of officers who are not trained in any of these three subjects is .Cevap
- DThe number of officers trained in at least two subjects is .
Cevap
The statements confirming that officers are trained only in Cyber Security and that officers are not trained in any of the three subjects are correct.
The statement specifying that officers are trained only in Cyber Security is correct because . The statement specifying that officers are not trained in any of the three subjects is also correct because the total union of officers with at least one training is , leaving .
Adım Adım Çözüm
Anahtar Kavram
Principle of Inclusion-Exclusion for Three Sets