A walk in the positive quadrant of the plane consists of a sequence of moves, each one
Question:
(a) Show that the number of walks from the origin:
(b) Suppose a walker starts at the origin (0, 0) and at each discrete unit of time moves either up one unit or to the right one unit each with probability 1/2. If x > y, find the probability that a walk from (0,0) to (x,y) always stays above the main diagonal.
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a The walk takes x y steps of which x steps move to the right and y ste...View the full answer
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