Let E stand for the set of people; the propositional function G(e) is true if e (a member of E) plays the guitar; R(e) is true if e plays the recorder; and P(e) is true if e plays the piano. Formalise the following statements:   i) Someone plays the guitar and the recorder.  ii) No-one plays all three instruments.  iii) If someone plays the recorder, then that person also plays either the guitar or the piano.  iv) If someone plays the guitar and the recorder, then that person does not play the piano.

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Let E stand for the set of people; the propositional function G(e) is true if e (a member of E) plays the guitar; R(e) is true if e plays the recorder; and P(e) is true if e plays the piano.

Formalise the following statements:

 

i) Someone plays the guitar and the recorder. 

ii) No-one plays all three instruments. 

iii) If someone plays the recorder, then that person also plays either the guitar or the

piano. 

iv) If someone plays the guitar and the recorder, then that person does not play the piano.

 

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