Answers

  • Brainly User
2016-03-03T10:36:36+08:00
When order matters, use permutation in finding the probability that the right combination will be hit.

P (10, 3) =  \frac{10!}{(10-3)!}

P (10,3) = 10 × 9 ×8 ×7×6×5×4×3×2×1
                  --------------------------------------  
                                   7×6×5×4×3×2×1

P (10,3) = 10 x 9 x 8

P (10,3) = 720
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