Find the number of different 8-letter arrangements that can be made from the letters of the word DAU

APDF: Arithmetic Progression | 20 Years PYQs AMU XI Entrance
PDF: Light | 20 Years PYQs AMU XI Entrance

Find the number of different 8-letter arrangements that can be made from the letters of the word DAUGHTER so that
(i) all vowels occur together
(ii) all vowels do not occur together
(iii) No vowels occur together
(iv) Vowels always comes at even place
(v) When relative place of vowels and consonants do not changed
(vi) When order of the vowels unchanged
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PDF: Arithmetic Progression | 20 Years PYQs AMU XI Entrance
PDF: Light | 20 Years PYQs AMU XI Entrance