What is OP of (1, 0)


#1

Since 0 is a number with one digit and the sum of digits in 0 is zero,
Shouldn’t the answer to test (1, 0) be ONE instead of ZERO?
Thanks for help in advance.


#2

Note that a valid number starts from digits 1-9 except the number 0 itself


#3

Same doubt… Pls respond someone