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November 6th, 2008, 06:34 PM   #1
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isomorphism problem

Please help me on this problem

Up to isomorphism, how many additive abelian groups G of order 16 have the property that x+x+x+x=0 for each x in G?
(A) 0
(B) 1
(C) 2
(D) 3
(E) 5
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November 8th, 2008, 06:48 PM   #2
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Re: isomorphism problem

E
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