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For every event A there corresponds the event called:

ANot A
BOnly A
CAll A
DHalf A
Answer & Solution
Correct answer: A. Not A
1. Every event divides the sample space into two parts. 2. One part is A and the other is everything outside it. 3. That second part is the complementary event, or not A. _Source: syllabus Mathematics, Chapter 16, Probability._
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