If * is defined on R* as a * b = (ab/2) then identity element in the group (R*, *) is

If * is defined on R* as a * b = (ab/2) then identity element in th

1.	If * is defined on R* as a * b = (ab/2) then identity element in the group (R, ) is
A.	1
B.	2
C.	1/2
D.	1/3
Answer» C. 1/2

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