Consider a rectangular grid of lines formed by m parallel lines intersecting n parallel lines running perpendicular to them. How many different paths along the grid are possible from the top right corner of the grid to the bottom left corner of the grid, if only downward and leftward motion is allowed?
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castings on a rectangular grid. Classifications .... Subsidiary stations Stations which are on the main survey lines or any other survey lines .... (b) A 4 m wide road runs about parallel to the right of the chain line. Offsets
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