7 ms·But in base 12 the number 12 would be written as 10. 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, 10, 11, etc.by mfcl 2y agoBut in base 12 the number 12 would be written as 10. 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, 10, 11, etc.