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  1. September 26th 2008, 10:53 AM #1
    mandy123
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    Prove that an Abelian group with two elements of order 2 must have a subgroup of order 4.
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  2. September 26th 2008, 10:56 AM #2
    ThePerfectHacker
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    Quote Originally Posted by mandy123 View Post
    Prove that an Abelian group with two elements of order 2 must have a subgroup of order 4.
    Take \{e,a,b,ab\} where a,b have order 2.
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