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Standard XII
Physics
Question
In the Boolean algebra, of the following one which is not equal to
A
is
A
.
A
¯
A
.
A
A
+
A
¯
¯¯¯¯¯¯¯¯¯¯¯¯¯
¯
¯
A
+
¯
A
A
¯
¯¯¯¯¯¯¯¯¯¯¯¯¯
¯
¯
A
+
¯
A
B
¯
A
.
A
C
A
.
A
D
A
+
A
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Solution
Verified by Toppr
The truth table for AND gate is given as shown in the figure.
When
A
is true,
¯
A
is false and vice versa.
Hence value of
¯
A
.
A
is always false(looking at the second and third row of the table) which is not equal to
A
.
Hence, option C is the answer.
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