前提使:35 percent believe : resign(充分条件)->convicted (必要条件) 结论是: 35% believe: convicted (充分条件)-> resign (必要条件) 作者从前提得结论时弄颠倒了。
don't take it wrong, i didn't mean you cann't figure out what is sufficient and what is required. just i answered some poster days ago about these questions, and two ppl replied that they didn't get what i was talking about, so i think i'd better make it clear this time. but it turns out i didn't, misleading ppl again.
hope others can help and make it clear.
[此贴子已经被作者于2003-9-6 15:47:19编辑过] |