1080, 9989
Oh, what a happy little question! The greatest 6-digit number where the digit in the thousands place is twice the digit in the tens place is 986,432. And the smallest 6-digit number following the same rule is 164,823. Isn't it wonderful how numbers can dance together in such a harmonious way?
1We can not start a three digit number with 0, so 1 is the smallest digit.
100,000
.1
1
The smallest even 4-digit number using the digits 5, 7, 4, and 9 is 4579. To create the smallest number, we start by placing the smallest digit, which is 4, in the thousands place to ensure it is a 4-digit number. Since we need to make it an even number, the units place must be an even number, so we use 4. Placing 5 in the hundreds place and 7 in the tens place gives us the smallest even 4-digit number, 4579.
In order to make the smallest possible number with a set of digits, you want the least valued number in the greatest valued place. For 5 digits, you would want the least digit, 0, in the ten thousands place. You would then want the second least digit, 3, in the thousands place, and so on. For the digits 0,3,5,7,9 the smallest possible number would therefore be 03,579 or 3,579.
The number that matches your criteria is... 998949
The smallest possible 9 digit number (assuming negatives are not allowed) is 102,345,678 in which 5 is in the thousands' place.
1000
The smallest digit in any place is always 0.
102, 010 2 in the thousands place is twice 1 in the tens place,