Question 1090816
.
<pre>
It can not be a two-digit number (two odd digits can not sum up to 11, which is the odd number).


Hence, it is three-digit number.


Then the first digit is 1. It can not be nothing else.


Then the sum of the two other digits is 10, and they are odd digits.


There are 2 possibilities: her locker number is  119  or 137.
</pre>