Know your sets

Algebra Level 3

If $3.14159265358979323846264338327950 \in A$

What is $A$ ?

Note: If you don't know about $\mathbb{R}$ and the others, refer here .

$\setminus$ denotes the set minus operation.

$A'$ means the complement of set $A$

\{ \pi, 5, 9, { e }^{ 1.14473 }\}

\mathbb{Z} \cup \mathbb{Q'}

[\pi-1, \pi) \cup (\pi^{\pi}, \infty)

\ \mathbb{C} \setminus \mathbb{R}

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