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Cardinality of Sets

A is a subset...

Question

A is a subset of B. If n(A) = 10 and n(B) = 30, then n(B U A) = __________ .

A

10

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B

20

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C

30

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D

40

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Solution

The correct option is C
30

30

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Similar questions

A is a subset of B. If n(A) = 10 and n(B) = 30, then n(B U A) = __________ .

n (U) = 48, n (A) = 28, n (B) = 33

n (B - A) = 12

n (A \cap B)^{C} =

n (U) = 48, n (A) = 28, n (B) = 33

n (B - A) = 12

n (A \cap B)^{C} =

n (μ) = 48, n (A) = 28

n (B) = 33

n (B - A) = 12

n (A \cap B)^{C}

A \subset B, n (A) = 6, n (B) = 10

n (B - A)

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