Exam-style question
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Simplify the Boolean expression A AND B OR A AND NOT B.
- A.A
- B.B
- C.A AND B
- D.A OR B
Model answer
What a good answer should say
- A
Explanation
Why this works
Boolean algebra rule: distributive law -> Y = A AND B OR A AND NOT B -> Y = A AND (B OR NOT B) -> Y = A AND 1 -> Y = A -> The simplified expression is A.
Common mistake
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