Question 92
We will call a number *good* if it is a positive integer with at least two digits and by removing one of its digits we get a number which is equal to the sum of its initial digits (for instance, $109$ is good: remove $9$ to get $10 = 1 + 0 + 9$).
a) Find the smallest good number.
b) Find how many numbers are good.
a) Find the smallest good number.
b) Find how many numbers are good.