1.

Number of ways for a person A to travel from (0,0) to (16,16) in the coordinate plane by moving one unit in the positive x or y direction at a time, such that A changes direction an odd number of times, is equal to

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Number of ways for a person A to travel from (0,0) to (16,16) in the coordinate plane by moving one unit in the positive x or y direction at a time, such that A changes direction an odd number of times, is equal to



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