two
5040, assuming none of the digits are the same. (Assuming they're not, there's 5040 unique combinations you can make out of 7 digits).
It is -987. The smallest positive 3-digit integer with unique digits is 102.
9999
Syndicate Bank accounts have 14 digits. First 4 digits stand for Branch, next 3 digits for Product (SB/CA/OD/Loan) and the next 7 digits unique numbers for each customers.
Digits or decimal digits more specifically. The decimal system has 10 unique digits 0-9.
There are 8 digits in a City Union Bank checking account number. Every account will have its own unique number.
98765
98765
Four.
18. The sum of its digits is 9. And yes, it is unique.
There are only two smaller 3-digit numbers and both of them have repeated digits.