Hi,

started a topic on subgroups this week and I can't seem to find any examples to help me with a couple of questions.

The first one is 'Find all the subgroups of Z_{30}' I'm not to sure if this is just the factors of 30 am I right?

The second part of the question I'm stuck on is not necessarily about subgroups (or maybe it is, not to sure!) but it asks to determine the order of every element in (i) D_{8 }and (ii). D_{12 }.

Would appreciate very much if anyone could help me, thanks!