2011-07-22, 04:12 AM
anyone who didn't understand just follow this guideline:
units digit (0 or 1 only)
tens (0 1 or 2)
hundreds (0 1 2 or 3)
.
.
.
also, yes "20" was fine
Also....
21
units digit (0 or 1 only)
tens (0 1 or 2)
hundreds (0 1 2 or 3)
.
.
.
also, yes "20" was fine
Also....
21

