at2921435 at2921435

13-12-2022
Mathematics

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The pentatonic musical scale contains 5 notes in an octave: C, D, E, G, and A. Miles decides to look for new musical themes by playing random sequences of 4 notes from the pentatonic scale.

(a) How many possible four-note sequences can be played?
(b) How many possible four-note sequences contain no Gs?

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