In a code language, DEN is written as 35461315, then what should be written for POST in the same code language?a.2314161517252651b.1517141618201921c.1715141618201921d.1517161418201921

I'm sorry, but you didn't provide a specific question or a pattern for the code language. However, if we assume that each letter corresponds to a pair of numbers in the code, we can try to decipher it.

Let's look at the word "DEN". In the alphabet, D is the 4th letter, E is the 5th, and N is the 14th. If we look at the code, it's written as 35461315. This doesn't seem to directly correspond to the alphabetical order of the letters.

However, if we break down the numbers into pairs, we get 35, 46, 13, and 15. If we assume that the first number in each pair represents the letter and the second number represents its position in the alphabet, we can try to apply this to the word "POST".

P is the 16th letter of the alphabet, O is the 15th, S is the 19th, and T is the 20th. Using the assumed pattern, we would get:

P - 16 -> 1 and 6 -> 16 O - 15 -> 1 and 5 -> 15 S - 19 -> 1 and 9 -> 19 T - 20 -> 2 and 0 -> 20

So, POST would be written as 16151920. However, this doesn't match any of the options you provided. Therefore, we might need more information or a different pattern to correctly answer this question.