Q. 175.0( 1 Vote )

# If A is a proper subset of B, then A ∪ BA. AB. ΦC. BD. A ∩ B

Given, A is a proper subset of B

Let us consider two set as A is a proper subset of B

A = {9, 8, 7, 6, 5, 4} B = {1, 2, 3, 4, 5, 6, 7, 8, 9}

A B means we must combinedly write all the elements of both the sets.

A B = {9, 8, 7, 6, 5, 4} {1, 2, 3, 4, 5, 6, 7, 8, 9}

= {1, 2, 3, 4, 5, 6, 7, 8, 9}

The resultant set is same as B

Option C is the correct answer.

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