1.

A black ant has to go from the origin to a point (6, 4) on the Cartesian plane, using the coordinate axes. However, it avoids crossing the point (4, 1), as a red ant is sitting there. Find the total number of shortest paths that it can go along.

Answer»

(A) 150
(B) 160
(C) 190
(D) 240

Answer :B


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