The missing number or factor which can replace the question mark will be 6.
The given table is:
a ?
a 6a
2 2a 12
It is required to find the factor which will replace the question mark.
<h3>How to find the missing number or factor?</h3>In the first row, the factor is a. So, after diving a from the row, the remaining part will be,
a and 6.
Now, in the second row, the factor is 2. So, after diving 2 from the row, the remaining part or quotient will be,
a and 6.
In the second column, 6 is remained after diving by the row factor.
Therefore, the missing number or factor which can replace the question mark will be 6.
For more details about factors, refer to the link;