If repeated digits are allowed, then the largest 12-digit number is 999,999,999,999 .
If repeated digits are not allowed, then the largest 12-digit number is 989,898,989,898 .
If the same digit can't be used more than once, then the largest possible number has only
10 digits. The number is 9,876,543,210 .
The largest number with no repeated digits is 9,876,543,210 although it is 10 digits long, the largest 3 digit number with no repeated digits is 987
The largest ten digit number with no repeated digits is '9876543210'.
987654
987654
9,999,999,999
999,999,999,999
The largest ten digit number with no repeated digits is '9876543210'.
The largest number with no repeated digits is 9,876,543,210 although it is 10 digits long, the largest 3 digit number with no repeated digits is 987
The largest ten digit number with no repeated digits is '9876543210'.
987654
The largest ten digit number with no repeated digits is '9876543210'.
The largest 10-digit number with no digit repeated is 9876543210 !
987654
9,999,999,999
987654
97531
100,000,000,000