Lời giải:
- 3 ∉ N - 3 ∈ Z -3 ∈ Q
∉ Z ∈ Q N ⊂ Z ⊂ Q
-3 \(\notin\) N
- 3 \(\in\) Z
-3 \(\in\) Q
\(\dfrac{-2}{3}\) \(\notin\) N
\(\dfrac{-2}{3}\) \(\notin\) Z
\(\dfrac{-2}{3}\) \(\in\) Q
-3 ∉ N,-3 ∈ Z, -3 ∈ Q
\(\dfrac{-2}{3}\) ∉ N , \(\dfrac{-2}{3}\) ∉ Z, \(\dfrac{-2}{3}\) ∈ Q
-3∈N
-3⊂Z
-3⊂Q
\(\dfrac{-2}{3}\)∉N
\(\dfrac{-2}{3}\)⊂Z
\(\dfrac{-2}{3}\)⊂Q
-3 ∉ N
-3 ∈ Z
-3 ∈ Q
\(\dfrac{-2}{3}\) ∉ N
\(\dfrac{-2}{3}\) ∉ Z
\(\dfrac{-2}{3}\) ∈ Q