Answer:
it is permutation problem,
1. nPr= P(n,r) = n!/(n-r)!
=12!/(12-12)!
=12!/0!
=12!/1
=479001600 therefore, there are 479001600 possible ways can 12 people occupy the 12 seats in a front row a mini-theater.
2. 15!= 15×14×13×12×11×10×9×8×7×6×5×4×3×2×1= 1307674368000
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Answers & Comments
Answer:
it is permutation problem,
1. nPr= P(n,r) = n!/(n-r)!
=12!/(12-12)!
=12!/0!
=12!/1
=479001600 therefore, there are 479001600 possible ways can 12 people occupy the 12 seats in a front row a mini-theater.
2. 15!= 15×14×13×12×11×10×9×8×7×6×5×4×3×2×1= 1307674368000