How many coding block nos are there?

#1

In 23 , should we count (2,3) as two coding block nos or 23 a single coding block no or both (2,3) and 23 as three coding block nos?

#2

hi @kodivine0 for 23 you can either choose
2 3
or 23
but you cannot choose both (because one digit can only be selected once)
Now we can see that in the first case, 2 CB numbers are formed and in second case, only 1 CB number is formed and we need the maximum possible numbers, so we consider the 2, 3 case.
Please mark the doubt as resolved