BdMO National Junior 2010/9

Discussion on Bangladesh Mathematical Olympiad (BdMO) National
samiul_samin
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BdMO National Junior 2010/9

Unread post by samiul_samin » Sun Feb 24, 2019 9:26 am

Tom and Jerry have $14$ tiles in total.Of them $8$ are colured blue and $6$ are colured red.They want to arrange them in a straight line such that between any two red tiles there at least one blue tile.How many possible ways are there of arranging them in line?

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