# basic theorems properties of boolean algebra

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## According to Boolean algebra Involution law (x’)’=? Is equal to

- A. x'
- B. x
- C. 1
- Correct Answer: Option B

## According to boolean algebra, postulate 2 w.r.t addition is

- A. x+0=x
- B. x+0=1
- C. x+0=0
- D. x+1=0
- Correct Answer: Option A

## According to Boolean algebra theorems x.x is equal to

- A. x
- B. 1
- D. x'
- Correct Answer: Option A

## In Boolean algebra Multiplicative inverse is

- B. 1
- C. 1/a
- D. a
- Correct Answer: Option D

## According to boolean algebra absorption law, which of following is correct?

- A. x+xy=x
- B. (x+y)=xy
- C. xy+y=x
- D. x+y=y
- Correct Answer: Option C