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Mathematics
Problem
Suppose
A
=
{
x
∈
Z
∣
3
<
x
≤
10
}
A = \{x \in \mathbb{Z} \mid 3 < x \le 10\}
A
=
{
x
∈
Z
∣
3
<
x
≤
10
}
. (a) Write down the meaning of the interval notation. (b) List the elements of set
A
A
A
. (c) Find
n
(
A
)
n(A)
n
(
A
)
.
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