A
Concept
The cardinality of a set is a measure of the "number of elements" of the set. For example, the set contains 3 elements, and therefore. has a cardinality of 3.
Set A is the set of integers greater than -8 and less than -4.
Therefore set A = {-7, -6, -5,}
-7 is greater than -8 and -5 is less than -4 from the number line.
Therefore, set A = { -7, -6, -5 }
B = {b, h, i, l. r, s }
Cardinalities of
n(A) = 3 n(B) = 6
B
[tex]\begin{gathered} -5\text{ }E\text{ A = true} \\ -12\text{ E A = false} \\ b\text{ E B = true} \\ t\text{ }\notin\text{ B = true} \end{gathered}[/tex]
