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A supermarket has seven checkout lanes. All seven checkouts accept cash payments but only lanes 1 to 4 allow credit cards. Kath, Kim and Sharon are all

shopping and Kim insists on using her credit card while Kath and Sharon intend to pay cash. In how many ways could they choose their checkout lanes? (More than one could choose the same lane).


more than one can choose the same lane

7 * 7 * 4 = 196,
0 0 0
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