0123456789
00112233445566778899 double the hole thing or 01234567890123456789 twice together
99876543210
one is the lowest number
There are many ways. One such is 21, 30, 45, 69, 78
.0123456789
0123456789
If the numbers are not repeated then the highest 5 digit even number to be made out of 0123456789 is : 98764.
Every 9-digit combination of those numbers is a multiple of 3. None of them will be prime.
0123456789
1023456789
If that is the only criteria then the lowest number is 456789, what you allready have.
The American number system is called the Hindu Arabic system and is the numbers 0123456789
00112233445566778899 double the hole thing or 01234567890123456789 twice together
315
7, 14, 28, 56, 903
It's the number system most commonly used numbe system in which there are ten digits (0123456789) that are counted before the numbers repeat to make larger numbers (10,11,12,13....)