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Match List I with List II
List IList II
(A) φ ∩ {φ}(I) φ
(B) {φ} ∩ {φ}(II) {φ}
(C) {φ, {φ}} − φ(III) {{φ}}
(D) φ ∪ {{φ}}(IV) {φ, {φ}}

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Show answer & explanation

Correct answer: D. (A)-(I), (B)-(II), (C)-(IV), (D)-(III)

Explanation

φ ∩ {φ} = φ (I); {φ} ∩ {φ} = {φ} (II); {φ, {φ}} − φ = {φ, {φ}} (IV); φ ∪ {{φ}} = {{φ}} (III).

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