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1990 AIME Question 8

AIME · 1990 AIME

Question 8

In a shooting match, eight clay targets are arranged in two hanging columns of three targets each and one column of two targets. A marksman is to break all the targets according to the following rules:

$(1)$ The marksman first chooses a column from which a target is to be broken.

$(2)$ The marksman must then break the lowest remaining target in the chosen column.

If the rules are followed, in how many different orders can the eight targets be broken?