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[" 2.(a) Answer any one of the following...

[" 2.(a) Answer any one of the following: "],[" (i) On the set "Q^(+)" of all positive rational numbers if the binary operation "],[quad *" is defined by "],[quad a*b=(1)/(4)" ab for all "a,b in Q^(+)," find the identity clement in "Q^(+)" ."]

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