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Let X be a non-empty set, then P(X)={A:A...

Let X be a non-empty set, then `P(X)={A:AsubX}` is a Boolean lattice w.r.t. the operations `A+B=AcupB,A.B=A capB and A'= X-A` for all A, B inP(X) The additive identity of this Boolean algebra is

A

X

B

`phi`

C

`{phi}

D

none of these

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The correct Answer is:
B
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PATHFINDER-STATISTICS AND MATHEMATICAL REASONING-QUESTION BANK
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  2. Which of the following is different from the others?

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  7. Which of the following is true?

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