Their first obstacle is to get past Fluffy, a three-headed dog. Harry decides to play some music to let the dog fell int

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answerhappygod
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Their first obstacle is to get past Fluffy, a three-headed dog. Harry decides to play some music to let the dog fell int

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Their first obstacle is to get past Fluffy, a three-headed dog.
Harry decides to play some music to let the dog fell into sleep.
The song that he plays consists of 60 musical notes and each note
can be one of the seven solfeggio syllables
(Do-Re-Mi-Fa-Sol-La-Si).
(a) Find the number of songs that he can play if
(i) the song must consist at least a “Do”.
(ii) the song must consist exactlyt two syllables.
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