9
4! = 24 ■
3024
how make the answer im don/now
3*3*2*1 = 18 of them.
It is already a four-digit number.
A digit is that which we used to count numbers.
With 123 digits you can make 123 one-digit numbers.
9
24 = 16 1111 1112, 1121, 1211, 2111 1122,1212,2112,2121,1221,2211 1222,2122,2212,2221 2222
what is the greatest 4-digit number you can make with the digit 0,1,2,3, and 4
Twelve of them.
Ten different digits can be used to make 10C4 = 10*9*8*7/(4*3*2*1) = 210 four-digit numbers. Either numbers starting with 0 are permitted or the 10 digits do not contain a 0.