Let |a|=30.  How many left cosets of <a4>  in <a> are there?  List them.   I was able to determine that there should be two left cosets, but I'm having trouble identifying them.  I know one is <a4>, but can't seem to reason what the other one is.

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Statements and Logic

Logic is the analysis of general patterns of thoughts without regard to any specific sense of context.