Question
How many unique five-digit numbers can be created using
the digits 0, 1, 5, 6, 7, and 8, without repeating any digit?Solution
Ten-thousandth place cannot be 0. Because the number becomes four digit if the ten thousandth place is 0.
Therefore, total possible numbers that can be formed = 5 X 5 X 4 X 3 X 2 = 600
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