You can select 9 numbers for the first digit, 8 numbers for the second digit, and 7numbers for the third digit; so 504 (e.g. 9*8*7) different three digit numbers can be written using the digits 1 through 9.
6, as long as they are all different
81 As there are no limits stated then you can have a number comprising a repeated single digit (such as 2222), two pairs of numbers (e.g. 2244) or three different numbers (such as 2462). The first digit can be one of any of the 3 numbers. The second digit can be one of any of the three numbers, as can the third digit and also the fourth. Then you can have 3 x 3 x 3 x 3 = 81 different 4-digit numbers using the three given numbers.
Forming three three digit numbers that use the numbers 1-9 without repeating, the highest product possible is 611,721,516. This is formed from the numbers 941, 852, and 763.
111 and 201
6 possible 3 digit combonations
There are no three didgit numbers but there are 63 three digit numbers.
There are 60 such numbers.
Any 3 out of 4 = 4. Each set can be arranged 6 ways so 24 different numbers.
5 x 10 x 5 = 250 different numbers, assuming there is no limit to each digits' use.
Using the digits of 1345678, there are 210 three digit numbers in which no digit is repeated.
There are 900 three-digit numbers, ranging from 100 to 999.
There are 90 palindromic numbers.
There are only 999 three digit whole numbers.
All whole, three-digit numbers from 450 through 549 (when rounding to the nearest hundreds).
There is only one three digit number for a gross, and that is 144.
No. Three-digit numbers start with 100.
There are 17 such numbers.
There are 450 such numbers.