Book Maths Puzzle

There are 12 shot putters in olympic fainals in how many ways can gold,sliver and bronze medals can be awarded?
(a)220 (b)1320 (c)1728 (d)531441 (e)none

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Book Other Question

The number of seven digit integer with sum of the digits equal to 10 and formed by using the digits 1,2 and 3 only is There are 8 orators A,B,C,D,E,F,G,H. in how many ways can the arrangements be made so that A always comes before B and B before C?