Question: (d) How many paths through the grid are there from (0,0) to (10,8) that avoid both points A and B ? Such paths must have

(d) How many paths through the grid are there from (0,0) to (10,8) that avoid both points A and B ? Such paths

(d) How many paths through the grid are there from (0,0) to (10,8) that avoid both points A and B ? Such paths must have exactly 18 steps: 10 steps to the right and 8 steps up. One such path is shown in blue. Hint: Use the Inclusion-Exclusion Principle

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