In a certain language, CHHAPAK is coded as DJKEUGR.
How will MALANGA be coded in that language?

The correct option is NCOESMH.

Let's analyze the coding pattern by comparing the letters of the word CHHAPAK with its coded form DJKEUGR step-by-step.

We first write down the alphabetical positions of the letters in both words:
C = 3, H = 8, H = 8, A = 1, P = 16, A = 1, K = 11
D = 4, J = 10, K = 11, E = 5, U = 21, G = 7, R = 18

Now, let's find the difference between the alphabetical position of each letter in the original word and its corresponding letter in the code:
C → D : 3 + 1 = 4 (Difference is +1)
H → J : 8 + 2 = 10 (Difference is +2)
H → K : 8 + 3 = 11 (Difference is +3)
A → E : 1 + 4 = 5 (Difference is +4)
P → U : 16 + 5 = 21 (Difference is +5)
A → G : 1 + 6 = 7 (Difference is +6)
K → R : 11 + 7 = 18 (Difference is +7)

The pattern is that the $i$-th letter of the word is shifted forward by $i$ positions in the alphabet.

Following this exact pattern, let's determine the code for the word MALANGA:
M (position 13) + 1 = 14 → N
A (position 1) + 2 = 3 → C
L (position 12) + 3 = 15 → O
A (position 1) + 4 = 5 → E
N (position 14) + 5 = 19 → S
G (position 7) + 6 = 13 → M
A (position 1) + 7 = 8 → H

Combining these letters together, we get the code NCOESMH.