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1 March, 23:49

In a shipment of 59 vials, only 14 do not have hairline cracks. If you randomly select 2 vials from the shipment, in how many ways can at least one of the 2 selected vials have a hairline crack if the order of selection does not matter?

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  1. 2 March, 00:04
    0
    721

    Step-by-step explanation:

    at least one vial has crack

    14C1•45C1 + 14C2 = 721
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