With repeating digits, there are 33 = 27 possible combinations.
Without repeating any digits, there are 6 combinations:
Since there are only five different digits, a 6-digit number can only be generated if a digit can be repeated. If digits can be repeated, the smallest 6-digit number is 111111.
256
543210
4! (four factorial) = 4 x 3 x 2 x 1 = 24.
972.
the largest five digit number that can be formed using the digits 7 and 9 is 97,000
-4790281
99997
651
9876543210
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.
94205 if digits are not to be repeated and 99999 if digits can be repeated
There are 2000 such numbers.
985
None. Nine digit number cannot be formed using only five digits 1,2,3,4,5 in the case none of the digits can repeat. -------- Egad! I misread the question, apologies to the questioner. And thanks to Miroslav.
9,999,876 is the greatest seven-digit number using four different digits.
Since there are only five different digits, a 6-digit number can only be generated if a digit can be repeated. If digits can be repeated, the smallest 6-digit number is 111111.