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jamiscott jamiscott
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6 years ago
Consider this proof, (1.) (I  E)  (E  E) (2.)I / I (3.) I  E (4.)   E   I (5.) E  I (6.)  E (7.) (E  E)  (I  E) (8.) E  E (9.) E (10.)   E (11.)   I (12). I What is the justification for line 12?
 
  A) 11 Add B) 10, 8 MP C) 11 DN
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