89,999 different numbers i guess
There are 192.
6 2-digit numbers (13/15/35/53/51/31)
6 if all digits are different, 27 otherwise.
98765.
2 * 2 * 2 * 2 It's not possible to make 16 without using the same numbers twice or without using whole numbers.
If you want 4-digit numbers, there are 24 of them.
There are 192.
6 2-digit numbers (13/15/35/53/51/31)
1x+4y=
6 if all digits are different, 27 otherwise.
98765.
9
2 * 2 * 2 * 2 It's not possible to make 16 without using the same numbers twice or without using whole numbers.
Well honey, you've got 4 digits there, so you can form 4! (4 factorial) which is 24 numbers. That's right, you can make 24 different combinations with those digits. Math can be fun when you've got some sassy numbers to play with!
456, 546 and 564 are three of the four possible even numbers.
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.
With 123 digits you can make 123 one-digit numbers.