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In a certain code, 'HELLO' is coded as 85121215. What is the code for 'WORLD'?

Answer: A. 231815124
Each letter corresponds to its position in the alphabet: H=8, E=5, L=12, O=15. For WORLD, W=23, O=15, R=18, L=12, D=4, thus WORLD=231815124.
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