n(AUB)=n(A)+n(B)-n(AnB)
=25+27-10
=52-10
=42
How is n AUB value calculated?
The formula for the number of elements in A union B is n(A U B) = n(A) + n(B) - n(A ∩ B).
What is AUB A ∩ B?
The union of two sets A and B, written A U B, is the combination of the two sets. Intersection The intersection of two sets A and B, written AnB, is the overlap of the two sets.
Learn more about sets here
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