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Question

The value of ¯A+A in the Boolean algebra is
  1. ¯A
  2. A
  3. 0
  4. 1

A
¯A
B
0
C
A
D
1
Solution
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If A=0,¯A+A=1+0=1
If A=1,¯A+A=0+0=1

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