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How many possible three-digit passwords can be formed using digits 0 through 9 if no digits are repeated?
Wiki User
∙ 9y ago
The first digit can be 0 through 9, ten possibilities.
Having selected the first digit, you have 9 digits to pick from the second digit.
Having selected the second digit, you have 8 digits to pick from the third digit.
Hence total possibilities = 10 x 9 x 8 = 720
Wiki User
∙ 9y ago
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