Question: QUESTION 4 1 Assume the first time a valid path P meets the diagonal after ( 0 , 0 ) is at ( k ,

QUESTION 41
Assume the first time a valid path P meets the diagonal after (0,0) is at (k,k) for
some k=1,2,dots,n+1.
Show that the total number of such valid paths as above is Ck-1Cn-k+1.
QUESTION 4 1 Assume the first time a valid path P

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