In the group (G, *), A a,b ∈ G?
- a + b ∈ G
- ab ∈ G
- a * b ∈ G
- a - b ∈ G
Explanation
In a group (G, *), the binary operation * is defined in such a way that the result of combining any two elements is always an element in the group. Therefore, if a, b ∈ G, then a * b ∈ G.
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