If ‘NIGHT’ can be coded as 29, 19, 15, 17, 41, then ‘COLD’ will be coded as:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 7, 31, 25, 9
Each number is compared with the position of its letter in the alphabet (A = 1, B = 2, ..., Z = 26). In NIGHT, every code is twice the position plus 1:
N = 14: \(2\times14+1=29\)
I = 9: \(2\times9+1=19\)
G = 7: \(2\times7+1=15\)
H = 8: \(2\times8+1=17\)
T = 20: \(2\times20+1=41\)
The same rule applied to COLD, letter by letter in order:
C = 3: \(2\times3+1=7\)
O = 15: \(2\times15+1=31\)
L = 12: \(2\times12+1=25\)
D = 4: \(2\times4+1=9\)
Options (1) and (3) use the same four numbers in another order, so the code must be read in the order of the letters C, O, L, D.