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Let a and B Be Sets with Cardinal Numbers, N(A)= n(A−B)=n(B−A)n ( A - B ) = n ( B - A )

Question 139

True/False

Let A and B be sets with cardinal numbers, n(A)= a and n(B)= b, respectively. Decide whether the statement is true or false.
- n(A−B)=n(B−A)n ( A - B ) = n ( B - A )

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