Three of these four words are given in code.The codes are not written in the same order as the words and one code is missing.Find the code for the word COIN.PINKNICKPONYONYX905402638203A6920B5920C6520D5209E0528

The first step is to identify the words and their corresponding codes.

1. PINK - 905402
2. NICK - 638203
3. PONY - 6920B
4. ONYX - 5920C

The second step is to identify the pattern in the codes.

1. PINK - 905402: The first and last letters (P and K) correspond to 9 and 2, the second and second last letters (I and N) correspond to 0 and 0, and the middle letters (N and K) correspond to 5 and 4.
2. NICK - 638203: The first and last letters (N and K) correspond to 6 and 3, the second and second last letters (I and C) correspond to 3 and 0, and the middle letter (C) corresponds to 8.
3. PONY - 6920B: The first and last letters (P and Y) correspond to 6 and B, the second and second last letters (O and N) correspond to 9 and 0, and the middle letter (N) corresponds to 2.
4. ONYX - 5920C: The first and last letters (O and X) correspond to 5 and C, the second and second last letters (N and Y) correspond to 9 and 0, and the middle letter (Y) corresponds to 2.

The third step is to apply the pattern to the word COIN.

1. The first and last letters (C and N) correspond to 6 and 3.
2. The second and second last letters (O and I) correspond to 9 and 0.
3. The middle letter (I) corresponds to 2.

Therefore, the code for the word COIN is 690203.