A trial jury of 6 people will be chosen from among 18 candidates. How many juries are possible?

The order in which the six jurors are selected does not matter, so use combinations: 18 choose 6 = (18 × 17 × 16 × 15 × 14 × 13) ÷ (6 × 5 × 4 × 3 × 2 × 1) = 18,564. Therefore, the number of possible juries is 18,564, choice A.

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