✅ The pattern involves two steps: First, assign numerical position values to each letter (A=1, B=2, ..., Z=26) and sum them up for the word. Second, sum the individual digits of that total sum to get the final code.

For 'CAT': C=3, A=1, T=20. The sum of position values is 3 + 1 + 20 = 24. Summing the digits of 24 gives 2 + 4 = 6.

For 'DOG': D=4, O=15, G=7. The sum of position values is 4 + 15 + 7 = 26. Summing the digits of 26 gives 2 + 6 = 8.

Applying the same pattern to 'APPLE': A=1, P=16, P=16, L=12, E=5. The sum of position values is 1 + 16 + 16 + 12 + 5 = 50.

Summing the digits of 50 gives 5 + 0 = 5.

Therefore, 'APPLE' is coded as 5.