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If ^nPr = ^nPr + 1 and ^nCr = ^nCr - 1, find the values of n and r.

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If nPr = nPr + 1 and nCr = nCr - 1, find the values of n and r.

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Here nPr = nPr + 1

From (i) and (ii), we have n = 3 and r = 2 

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