Show that Z_2 + Z_2 + Z_2. has seven subgroups of order 2.

.How many elements of order 9 does Z_3 + Z_9 have.

*let all the pluses ('+') represent direct product. (circle plus).

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- November 8th 2008, 01:40 PMJuancd08External Direct Product
Show that Z_2 + Z_2 + Z_2. has seven subgroups of order 2.

.How many elements of order 9 does Z_3 + Z_9 have.

*let all the pluses ('+') represent direct product. (circle plus). - November 8th 2008, 02:29 PMThePerfectHacker
- November 8th 2008, 04:29 PMJuancd08sorry
Sorry but i cant spell out all the elements. I was told i need to do it a different way. using the thrm that says |(a,b)|=lcm(|a|,|b|).