9
9,999,876 is the greatest seven-digit number using four different digits.
The greatest number that can be formed using the digits 9, 0, 0, 0, and 0 is 99,000. The least number that can be formed using these digits is 9,000.
The smallest number that someone can get using the 91764 digits is 14679. The secret is to arrange the digits from the least number to their greatest number.
75431
98765.
653,822,110
9,999,876 is the greatest seven-digit number using four different digits.
The greatest number that can be formed using the digits 9, 0, 0, 0, and 0 is 99,000. The least number that can be formed using these digits is 9,000.
The smallest number that someone can get using the 91764 digits is 14679. The secret is to arrange the digits from the least number to their greatest number.
98765.
75431
987654
752
The greatest 9-digit number using three different digits is 999888777, formed by using the digits 9, 8, and 7 in descending order. The smallest 9-digit number using three different digits is 100000000, created with the digits 1, 0, and 0. This arrangement ensures that the number starts with 1, followed by the zeros to maintain the smallest value.
14
94205 if digits are not to be repeated and 99999 if digits can be repeated
75431