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The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

The diagonals of a quadrilaretral intersect at (-1,4). one of the sides of the quadrilateral is bounded by (2,7) and (-3,5) determine the coordinates of the other side in order for the quadrilaretral to be a square.

Acd that is originally priced at $15.85 red-tagged for the sale. what is the sale price of the cd