It is easy to guess that 51 is the missing number. The entries in the last row are obtained by taking multiplication of entries in third and second row and subtracting entries in first row in the same column. Is another idea possible to get another answer? 
2026-03-28 08:48:17.1774687697
What would be the another possible answer?
31 Views Asked by Bumbble Comm https://math.techqa.club/user/bumbble-comm/detail At
1
If you view the middle column as the median of the other two, the last entry can be $49$.
Remark: Such questions are not properly phrased and it is hard to justify what is the answer.