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Which of the following statements related to Boolean algebra is FALSE?
Question

Which of the following statements related to Boolean algebra is FALSE?

A.

X(X+1)=XX \cdot (\overline{X} + 1) = X​​

B.

X(X+XY)=1X \cdot (\overline{X} + \overline{X}Y) = 1​​

C.

X+X=1X + \overline{X} = 1​​

D.

1+X=11 + X = 1​​

Correct option is B

X(X+XY)=1X \cdot (\overline{X} + \overline{X}Y) = 1

Apply Distributive Law to (˙X+XY) \dot (\overline{X} + \overline{X}Y)

X+XY=X(Absorption Law: A+AB=A)\overline{X} + \overline{X}Y = \overline{X} \quad \text{(Absorption Law: } A + AB = A \text{)}

Substituting: X(X+XY)=XX=0X \cdot (\overline{X} + \overline{X}Y) = X \cdot \overline{X} = 0

This statement is FALSE because the result is 0, not 1.​​​​​

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