What is the smallest two-digit number that is divisible by 5, the sum of the digits of which is 6.

Solution of the task:

1. The conditions say that the required number must be divisible by 5 and the sum of the numbers of which is 5, it follows that the number must end with either 5 or 0, since otherwise it will not be divisible by 5;

2. From all of the above, it turns out that the number will be either 60 (since 6 + 0 = 6), or 15 (since 1 + 5 + 6), the least of which is 15;

3. Answer: 15;