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  3. explain your answers name the principles you use and evaluate...

Question: explain your answers name the principles you use and evaluate...

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Explain your answers, name the principles you use, and evaluate numerical expressions.

(5) (a) How many grid paths go from (0,0) to (6,6)2 (b) How many of the paths in (a) contain a step leading from (1,2) to (2, 2)? (c) How many of the paths in (a) go through (1, 1), (2,2) or (3,3)? (d) How many of the paths in (a) go through a point of the form (k, 6-k), for 0 k6?

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