If the group (z, ∗) of all integers, where a ∗ b = a + b + 1 for – McqOptions

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1.	If the group (z, ∗) of all integers, where a ∗ b = a + b + 1 for all a, b ∈ z, the inverse of -2 is
A.	-2
B.	0
C.	-4
D.	2
Answer» C. -4

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