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.
-$n ( A - B ) = n ( B - A )$

Question

Quizplus · Accepted Answer

The cardinality $n(A - B)$ represents the number of elements in set A that are not in set B, while $n(B - A)$ represents the number of elements in set B that are not in set A. These numbers can be different, depending on the elements of each set.

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

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