In the group (G, .), the value of (a-1 b)-1 is

1.	In the group (G, .), the value of (a-1 b)-1 is
A.	ab-1
B.	b-1a
C.	a-1b
D.	ba-1
Answer» C. a-1b

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In&nbsp;the&nbsp;group&nbsp;(G,&nbsp;.),&nbsp;the&nbsp;value&nbsp;of&nbsp;(a-1&nbsp;b)-1&nbsp;is

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In the group (G, .), the value of (a-1 b)-1 is