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?

Respuesta :

Answer:

721

Step-by-step explanation:

at least one vial has crack

14C1•45C1 + 14C2 = 721