Latest MBA Aptitude Question SOLUTION: Consider an equilateral triangle of side length n, which is divided into unit triangles, as shown. Let f(n) be the number of paths from the triangle in the top row to the middle tr

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(#M40014753) MBA question mensuration, geometry & co-ordinate geometry Keep an EYE

Consider an equilateral triangle of side length n, which is divided into unit triangles, as shown. Let f(n) be the number of paths from the triangle in the top row to the middle triangle in the bottom row, such that adjacent triangles in our path share a common edge and the path never travels up (from a lower to a higher row) or revisits a triangle. An example of one such path is illustrated below for n=5. Determine the value of f(2009).Approach Please

1) 2009!
2) 2009
3) 720
4) 540
5) None of These

Asked In MBA (11 years ago)

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