Verify the cardinality property — task. Mathematics State Board, Class 9.

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A = \{20, 40, 162, 252\}

and

B = \{20, 40, 90, 140, 180\}

, then verify

n (A \cup B) = n (A)+ n (B) - n (A \cap B)

is cardinality property or not.

n (B) =

n (A \cup B) = n (A)+ n (B) - n (A \cap B)

Did you find an error?

1. Verify the cardinality property