# Differences

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 sav07_quiz_answers [2007/03/18 17:54]vkuncak sav07_quiz_answers [2007/03/20 20:57] (current)vkuncak Both sides previous revision Previous revision 2007/03/20 20:57 vkuncak 2007/03/18 17:54 vkuncak 2007/03/18 17:54 vkuncak 2007/03/18 16:27 vkuncak 2007/03/18 16:27 vkuncak 2007/03/18 16:23 vkuncak 2007/03/18 16:21 vkuncak 2007/03/18 16:18 vkuncak 2007/03/18 16:18 vkuncak 2007/03/18 16:14 vkuncak 2007/03/18 16:10 vkuncak created 2007/03/20 20:57 vkuncak 2007/03/18 17:54 vkuncak 2007/03/18 17:54 vkuncak 2007/03/18 16:27 vkuncak 2007/03/18 16:27 vkuncak 2007/03/18 16:23 vkuncak 2007/03/18 16:21 vkuncak 2007/03/18 16:18 vkuncak 2007/03/18 16:18 vkuncak 2007/03/18 16:14 vkuncak 2007/03/18 16:10 vkuncak created Line 22: Line 22: 2) for all x, Q(x)." 2) for all x, Q(x)." - * **Answer**: Invalid. + * **Answer**: Invalid.  Take as P,Q as predicates on integers, with P(x) meaning "x is even" and Q(x) meaning "x is odd". * Let x,y,z be integer variables that satisfy both of these two conditions: * Let x,y,z be integer variables that satisfy both of these two conditions: