SOLUTION: How many permutations of the digits 0, 1, 2, . . . , 9 either start with a 3 or end with a 7?

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Question 740459: How many permutations of the digits 0, 1, 2, . . . , 9 either
start with a 3 or end with a 7?
Answer by lynnlo(4176) About Me  (Show Source):