Hard
If the words formed by the letters of the word 'ROSE' are arranged as in a dictionary, what is the position of the word 'SERO'?
If the words formed by the letters of the word 'ROSE' are arranged as in a dictionary, what is the position of the word 'SERO'?
Arranging the letters E,O,R,S alphabetically: words starting with E occupy positions 1-6, O occupy 7-12, R occupy 13-18, and S-words start at position 19. Within the S-words, those starting 'SE' come first: SEOR is at position 19, and SERO is at position 20.
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