9,999,876 is the greatest seven-digit number using four different digits.
1324
987654
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.
By simply ordering the digits the largest is .5420
9,999,876 is the greatest seven-digit number using four different digits.
1324
987654
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.
There are eighteen of them.
99997
By simply ordering the digits the largest is .5420
To be an even number then the final digit = 2. The largest single prime digit is 7 (as both 8 and 9 are composite). The greatest even number fulfilling the conditions is 77777772.
7,543
97531
943
4