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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Deepak singh 1
if any doubt then ask
how do we know that each element has order 2 only?
in second case , since G has no element of order 4 this implies G have elements of order 1 and 2 only... order 1 element will be identity and all rest elements will be 2 order ..
feel free to ask again..