The logic followed here: Multiplication of the digits of positional value of each alphabet in the alphabet series.  Code for ‘WATER’  W (23) = 2 x 3 = 6 A (1) =  1 = 1 T (20) =  2 x 0 = 0 E (5) =  5 = 5 R (18) =  1 x 8 = 8  Code for ‘MUSIC;  M (13) = 1 x 3 = 3 U (21) = 2 x 1 = 2 S (19) =  1 x 9 = 9 I (9) = 9 = 9 C (3) =  3 = 3  Code for ‘FLOUR’  F (6) = 6 = 6 L (12) =  1 x 2 = 2 O (15) = 1 x 5 = 5 U (21) = 2 x 1 = 2 R (18) = 1 x 8 = 8  Thus, ‘FLOUR’ will be coded as 62528. Hence, the correct answer is (D).
I. 8/(21x) - 2/7 = 0
II. 16y² - 24y +9 = 0
Solve both equations I & II and form a new equation III in variable ‘r’ (reduce to lowest possible factor) using roots of equation I and II as per ...
I. 8x² - 78x + 169 = 0
II. 20y² - 117y + 169 = 0
I. 6y2- 17y + 12 = 0
II. 15x2- 38x + 24 = 0
Equation 1: x² - 90x + 2025 = 0
Equation 2: y² - 88y + 1936 = 0
Solve the quadratic equations and determine the relation between x and y:
Equation 1: x² - 40x + 300 = 0
Equation 2: y² - 30y + 216 = 0
I. 3p2Â - 11p + 10 = 0
II. 42q2Â + q -1 = 0
I. 5q = 7p + 21
II. 11q + 4p + 109 = 0
I. x2 + 11x + 30 = 0
II. y2 + 17y + 72 = 0
I. 5x2 – 7x – 6 =0
II. 2y2 – 5y – 7 =0