Let G = {e, x, x, x, y, xy, xy, xy) with order o(x) = 4,...

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Let G = {e, x, x², x³, y, xy, xy, xy) with order o(x) = 4, 0(y) = 2 and xy = yx, then the number of el- ements in the center of the group G is equal to (Answer should be integer) Let G = {e, x, x², x³, y, xy, xy, xy) with order o(x) = 4, 0(y) = 2 and xy = yx, then the number of el- ements in the center of the group G is equal to (Answer should be integer)