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find a group that contains elements a and b such that ︱a︱=︱b︱= 2 and

a) ︱ab︱ = 3 b) ︱ab︱=4 c) ︱ab︱=5

2)

suppose that H is a proper subgroup of Z under addition and H contains 18, 30 and 40.

determine H?

does anyone can help me out?

and ...i am really in hurry...thanks...

besides...i need all the steps...

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# Help abstract algebra

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