Suppose G is a group and H and H are both subgroups of G. Let HK={hk,...

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Advance Math

Suppose G is a group and H and H are both subgroups of G.

Let HK={hk, h?H and k ?K}

a.give a example such that |HK| not equal to |H| |K|

b. give a example to show f :HK ?H ?K given by f(hk) = (h,k) maynot be well defined.

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Here Im taken a group Z12 under    See Answer
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