2
9
6! = 720
24 three digit numbers if repetition of digits is not allowed. 4P3 = 24.If repetition of digits is allowed then we have:For 3 repetitions, 4 three digit numbers.For 2 repetitions, 36 three digit numbers.So we have a total of 64 three digit numbers if repetition of digits is allowed.
120 combinations using each digit once per combination. There are 625 combinations if you can repeat the digits.
59
It is difficult to interpret exactly what you are trying to ask. If you allow your five digit number to have leading zeroes and do not allow negative numbers, then 00000 - 99999 = -99999 is the smallest number. If you do allow negative 5 digit numbers, then (-99999) - 99999 = -199998 is the smallest number.
-4309278
999-111=888 888 3 digit numbers can be made with numbers between 1 - 9
You can select 12 numbers for the first digit, 11 numbers for the second digit, and 10 numbers for the third digit; so 12*11*10 = 1320 sets of 3 numbers can be made out of 12 different numbers.
1024If you're not allowed to use each digit more than once, then you can't make any 5-digit numbers, since you only have 4 digits to use.I you can use each numeral (1, 2, 3, or 4) as many times as you want, then there are 4 ways to fill each position in the 5-digit number. The total number of possibilities is 45 = 1024.
There are 12 such numbers.
a lot
24 of them.
There are 16 4-digit numbers that can be made up from 9 and 6.
210
2