In horse racing, one can make a trifecta bet by specifying which horse will come in first, which will come in second, and which will come in third, in the correct order. One can make a box trifecta bet by specifying which three horses will come in first, second, and third, without specifying the order.

a. In an eight-horse field, how many different ways can one make a trifecta bet?
b. In an eight-horse field, how many different ways can one make a box trifecta bet?


(a) (8)(7)(6) = 336

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