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Q: What is the ten's digit of the smallest number that uses each of the odd digits exactly once?

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Since there are only five different digits, a 6-digit number can only be generated if a digit can be repeated. If digits can be repeated, the smallest 6-digit number is 111111.

012345 or -543210, if negative numbers are permitted.

333 3 11 111

1 The largest five-digit number is 99999 and the smallest six-digit number is 100000, so the difference is one. If you're just looking for an answer to a homework question, that's all you need. For the brainy: Suppose the answer was greater than one. That would mean that there are one or more numbers between the largest five-digit number and the smallest six-digit number that cannot be written with either five or six digits. Either they would have to be written with four or fewer digits, which would make them smaller than any five-digit number, or with seven or more digits, which would make them larger than any six-digit number. If the answer was less than one, it would mean that it would be possible to have a five digit number that was greater than a six-digit one. So the answer must be one.

101 is the smallest 3 digit prime number.

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Since there are only five different digits, a 6-digit number can only be generated if a digit can be repeated. If digits can be repeated, the smallest 6-digit number is 111111.

No. 1000 has 4 digits and is the smallest 4-digit number. The smallest 3-digit number is 100.

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1000001 is the smallest 7 digit odd number...

0123456789

10234567

It is 17.

10,234

101 is the smallest 3 digit odd whole number