In a certain code language, 'HAPPY' is written as '12' and 'SORROW' is written as '9'. How will 'DELIGHT' be written in that language?

Let's analyze the relationship between the word length (number of letters) or letter sums and the code:
Word 'HAPPY' has 5 letters. Let's look at sum of vowels/consonants or letters:
Let's count the number of consonants and vowels:
HAPPY: Consonants = H, P, P, Y (4); Vowels = A (1).
Let's sum the alphabetical positions of letters: 8+1+16+16+25=66. Digital sum of 66=6+6=12.

Let's check if this digital sum logic works for 'SORROW':
S = 19, O = 15, R = 18, R = 18, O = 15, W = 23
Sum = 19+15+18+18+15+23=108.
Digital sum of 108=1+0+8=9.
This rule holds true!

Now let's apply the same logic to DELIGHT:

D = 4

E = 5

L = 12

I = 9

G = 7

H = 8

T = 20

Sum = 4+5+12+9+7+8+20=65.

Digital sum of 65=6+5=11.

Therefore, 'DELIGHT' is written as 11.