Inserting The Missing Character Questions

In the first row, 72 ÷ (²⁴/₂) = 72 ÷ 12 = 6.
In the second row, 96 ÷ (¹⁶/₂) = 96 ÷ 8 = 12.
Let the missing number in the third row be y.
Then, 108 ÷ (^y/₂) = 18  or  ^y/₂ = ¹⁰⁸/₁₈ = 6  or  y = 12.

In the first column, 2 x 1 + 1 = 3.
In the second column, 14 x 7 + 7 = 105.
Let the missing number in the third column be y.
Then, y x 9 + 9 = 117 or  9y = 108  or  y = 12.

Between the two I prefer tea is the correct sentence with suitable preposition.

 The letters in the first row follow the sequence +5, +7.

The letters in the second row follow the sequence +6, +8.
In the third row, the first letter G moves 7 steps forward to give the second letter N.
Clearly, the missing letter will be 9 steps ahead of N i.e. W.

Here it follows

426-153=2 and  3819-2010 =0

In the same way  399-93=1

Putting A=1, B=2, C=3,..., M=13,....,X=24,Y=25, Z=26, we have :

 JR = J + R2 + 2 = 10 + 18 2 + 2 = 16

CK = C + K2 + 2 = 3 + 112 + 2 = 9

TX = T + X2+ 2 = 20 + 242 + 2 = 24

OS = O + S2 + 2 = 15 + 192 + 2 = 19

 So, the missing numbers are :

21 and 14

Hence, the answer is (b).

 The number in the second column is three times the difference between the numbers in the third and first columns.
So, missing number = 3 x ( 16 - 7 ) = 3 x 9 = 27.