Official CISSP practice question overlap

ddaygloddayglo Member Posts: 25 ■□□□□□□□□□
The "CISSP Official (ISC)2 Practice Test" has 1300 practice questions
The "CISSP (ISC)2 Certified Information Systems Security Professional Official Study Guide" has four 250 question sets
The "(ISC)² CISSP Official App" has "450+ realistic practice questions"

Does anyone know how much overlap there is between the question sets?


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