Question: Using the digits 0, 1, 2, ..., 9, how many 6-digit numbers can be formed if the first digit cannot be a 0 or a

Using the digits 0, 1, 2, ..., 9, how many 6-digit numbers can be formed if the first digit cannot be a 0 or a 9 and the last digit must be an odd number? Repeated digitsareallowed.

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