given the scenario you are given. There is NO lowest unique bid.
Therefore the smallest bid group, which is $0.01 (which has 2
bidders) will win, and it goes to the first person who bid in that
group.
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given the same scenario again, if I am itchy and bid $0.01. That
made the $0.01 with 3 bidders, no longer the smallest bid group.
Therefore, $0.02 group win the bid and it goes to the first person
who bid at $0.02.
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Understood?