There are 210 4 digit combinations and 5040 different 4 digit codes.
Any 4 from 10 in any order = 10 x 9 x 8 x 7 = 5040
I would not like a list all possible 4 digit combination using 0-9.
There are 256. Some of them are: 1111, 1112, 1113, 1114, 1121, ... 2111, 2112, 2113, ... 3111, 3112, ... 4111, etc.
what is the least possible sum of two 4-digit numbers?what is the least possible sum of two 4-digit numbers?
There are 210 4 digit combinations and 5040 different 4 digit codes.
There can be 103 = 1000 codes.
If you include 0000, ten thousand unique four digit codes are possible.
If the first digit can be zero, there are 5,040. If the first digit can't be zero, there are only 4,536.
Any 4 from 10 in any order = 10 x 9 x 8 x 7 = 5040
I would not like a list all possible 4 digit combination using 0-9.
I can't
There are 256. Some of them are: 1111, 1112, 1113, 1114, 1121, ... 2111, 2112, 2113, ... 3111, 3112, ... 4111, etc.
what is the least possible sum of two 4-digit numbers?what is the least possible sum of two 4-digit numbers?
104 or 10000
3x10x10x10x9=2700
I would have to say 10,000 possible combinations. (0000, 0001, 0002 through 9998, 9999)