Answer: This would fill 4 and 4/9 containers.
Explanation:
Since we have given that
Quantity of walnuts in a container is given by

Quantity of walnuts which divided equally into containers is given by

Now, number of containers they would fill is given by

When we change it into mixed fractions we get,

So, blank will be filled with '4'.
Factors are the numbers you multiply together to get given number.
All possible factorizations of number 18 by two factors are:
- 18=1·18;
- 18=2·9;
- 18=3·6.
Answer: 1 and 18, 2 and 9, 3 and 6.