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What is the formal logic term used to indicate that A gets out immediately after B?

  1. A_B

  2. A/B_B/A

  3. B_A

  4. B/A_A/B

The correct answer is: A_B

The correct answer is A. In formal logic, the term used to indicate that A gets out immediately after B is typically written as A_B. This notation signifies that A follows B directly without any other elements in between. Options B, C, and D do not accurately represent the sequence of events where A gets out immediately after B. Option B uses a forward slash (/) which typically represents an "or" relationship in formal logic. Option C does not show the correct order of events because it places B before A. Option D uses a forward slash (/) similar to Option B and also does not represent the correct sequence of events. Therefore, the only option that correctly represents A getting out immediately after B is A_B.