8736
simple... its impossible! :)
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.
Possible 5 digit combinations using 5 digits only 1 time is 5! or 5*4*3*2*1 or 120. Using 5 digits where numbers can be used 5 times is 55 or 3125.
9876543120
If you can repeat a digit, there are 27. If you can't repeat a digit, there are only 6.
By rearranging the digits the answer is 123.
24
If the digits are only used once, each, the largest possible number would be 97,531
The largest even number less than 400,000,000 that can be formed using the digits 1 through 9 only once is 398,765,412. This number uses each of the digits from 1 to 9 exactly once and ends with the digit 2, making it even. Other combinations either exceed 400,000,000 or do not use all the digits exactly once.
103 and 301
236789
11111111924+9999929283666=
You can get 3 by using the numbers 2, 3, and 4 from 2345 in the following way: (2 + 4) / 2 = 3. This utilizes each of the digits only once.
There are only 6 digits and if they can only be used once then there is no way to string them together to make a number which is 7 (or more) digits in length.
103 and 301 .
"130" and "310" .
Six: 234, 243, 324, 342, 423, and 432.