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Standard XII
Physics
Question

In the Boolean algebra: ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯A+B is equal to:
  1. A + B
  2. ¯¯A+¯¯B
  3. ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯A.B
  4. ¯A . ¯B

A
A + B
B
¯A . ¯B
C
¯¯A+¯¯B
D
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯A.B
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Solution
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Clearly, as shown in the truth table, ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯A+B=¯A.¯B
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