Home Maths Fundamental of Mathematics General Let X and Y be two sets. Statement-1 X ∩ (Y …
Maths Fundamental of Mathematics General Single Correct MCQ
Published on: August 12, 2026

Let X and Y be two sets.

Statement-1 X ∩ (Y ∪ X)' = φ

Statement-2 If X ∪ Y has m elements and X ∩ Y has n elements then symmetric difference X Δ Y

has m – n elements.

A
Both the statements are true.
B
Statement- Ι is true, but Statement- ΙΙ is false.
C
Statement- Ι is false, but Statement- ΙΙ is true.
D
Both the statements are false.

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Text Solution

Verified by Experts
The correct answer is:
A

Sol. X ∩ (Y ∪ X)' = X ∩ (Y' ∩ X') = X ∩ X' ∩ Y' = φ

⇒ Statement – 1 true.

X Δ Y = (X ~ Y) ∪ (Y ~ X) = (X ∪ Y) ~ (X ∩ Y)

⇒ number of element in X Δ Y = m – n.

⇒ Statement-2 is true but does explain statement-1

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