In Boolean algebra A.A is equal to —
2019
In Boolean algebra A.A is equal to —
- A.
A
- B.
2A
- C.
A2
- D.
1
- E.
None of these
Attempted by 351 students.
Show answer & explanation
Correct answer: A
Explanation
In Boolean algebra:
A . A = A
This is called the: Idempotent Law
Why?
Repeating the same Boolean variable with AND operation does not change its value.
Truth Table
A | A·A |
|---|---|
0 | 0 |
1 | 1 |
Thus:
A . A = A