If a, b are elements of a group G, then (ab)-1 =

MCQOPTIONS

1.	If a, b are elements of a group G, then (ab)-1 =
A.	A-1 b-1
B.	B-1 a-1
C.	A-1 b
D.	B-1 a
Answer» B. B-1 a-1

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