Question

18. In the following matrix, row and column totals are given. Find the value of one missing
row's total:
A B B C С 30
B A B C 30
B D D D 30
с А D C ?
30 30 32 37
(a) 31
(b) 34
(d) 38
(c) 39​

Answer 1

Answer:

I think answer is option A but of course not sure

Answer 2

Answer:

total of rows and columns are equal in 4*4 MATRIX

SO

129-90= 39 ANS.