First row → (263 -188) *4 = 300.

Thus, Second Row → (915 -893) *4 = 22 *4 = 88.

In first column,
27- 7*2 = 13
In second column,
144 - 45*2 = 54
So,
in third column,
68 -32*2 = 4

We have
(101 + 15) - (35 + 43) = 38 (Center Element )

Missing Character = (48 + 184) - (56 + 34) = (232 - 90) = 142.

Second Row, 2*9 + 3*17 = 69.

Third Row, 2*13 + 3*11 = 59.

Let missing number be x,
2x + 3*13 = 49.

or, x = 5.

Column One:
(10 +12+4+10) /2 = 18

Column Two:
(11 +12 +5+20) /2 = 20

Column Three:
(15 +8 +10 +13) /2 = X(Let)
X = 23.

Logic:
First Row Element - Third Row Element = Second Row Element.

56 - 44 = 12
65 - 14 = 51
78 - 48 = 30.
Hence, in missing number should be 51.

Logic (Row-wise):
(First Element / Second element) * 2 = Third Element.

So,
(108/x) * 2 = 18
x = 12.
Missing Number = 12.

First row : 12 /4 = 21 /7.

Second row : 10 /5 = 4 /2.

Third row : 64 /8 = 24 /3.

So, required missing character = (83).

In first figure :
5 *1 = 5
4 *2 = 8
2 *2 = 4

Second Figure :
3 *2 = 6
3 *3 = 9
2 *2 = 4

Third Figure : 6 *1 = 6
7 *1 = 7
4 *2 = 8
So Missing Character is 678.

Logic:
Column-Wise
(First Column Element × 4th Column element) - (2nd column element + 3rd Column element) = Last Column Element

(4×2)-(5+3) = 0
(7×4)-(3+4) = 21
(6×5)-(4+4) = 22
(9×5)-(6+5) = 34.