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Assume that you select digits from the set {1,2,3,4,5,7} to form a number between 10 and...

Assume that you select digits from the set {1,2,3,4,5,7} to form a number between 10 and 700.

(1) How many such numbers can be formed if digits are not repeated?



(2) How many such numbers can be formed if digits can be repeated?

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