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Trifecta" Horse race. If 8 horses are entered into a race, how many tickets must you buy in order to gurantee?

Trifecta" Horse race. If 8 horses are entered into a race, how many tickets must you buy in order to gurantee that one of them will be a trifecta winner? How do you solve this? Do you need a scientific calculator?

Public Comments

1. There are 8x7x6 arrangements of the first three horses so do that out. Any calculator will work.
2. you have 2 options: 1: box them at 1 But only get 1/2 2: 24 possible tickets.