brains wrote:
Bunuel,
KarishmaB My question is ,"Can the digit be negative or non negative? "
A number can be such but a digit is neutral. When we say that it represents digit, 0 should have been considered as a digit irrespective of positive or negative. I hope that tags of this question are correct as it seems to be an official question as per the tags added. I found it little difficult to digest that here 0 cannot be considered since the question stems says symbols represent positive digit. Because of that answer would have been completely different.
The word "digit" is applicable to the ten digits 0 to 9.
Out of these, one digit (0), is neither negative nor positive.
The other nine digits (1 to 9) are positive.
All digits are non negative.
Hence, the point of saying "positive digit" is to tell you that no symbol can be 0.
_________________
Karishma
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