<DIV style="FONT-SIZE: 13px; MARGIN: 0px; COLOR: #000000; TEXT-INDENT: 0px; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; TEXT-ALIGN: justify"><SPAN style="FONT-SIZE: 13px; COLOR: #000000; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; TEXT-ALIGN: justify">1. 자연수 n에 대하여 집합 An을 </SPAN></DIV> <DIV style="FONT-SIZE: 13px; MARGIN: 0px; COLOR: #000000; TEXT-INDENT: 0px; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; TEXT-ALIGN: justify"><SPAN style="FONT-SIZE: 13px; COLOR: #000000; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; TEXT-ALIGN: justify">An = <x│nx = [nx], 0≤x≤1></SPAN> </DIV> <DIV style="FONT-SIZE: 13px; MARGIN: 0px; COLOR: #000000; TEXT-INDENT: 0px; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; TEXT-ALIGN: justify"><SPAN style="FONT-SIZE: 13px; COLOR: #000000; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; TEXT-ALIGN: justify">( 단 [x]는 x를 넘지 않는 최대의 정수 )</SPAN> </DIV> <DIV style="FONT-SIZE: 13px; MARGIN: 0px; COLOR: #000000; TEXT-INDENT: 0px; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; TEXT-ALIGN: justify"><SPAN style="FONT-SIZE: 13px; COLOR: #000000; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; TEXT-ALIGN: justify">A?? ∩ A?₂의 원소의 개수는</SPAN> (첫번째 네모는 6, 다음 네모는 0, 다음 네모는 7)</DIV> <DIV style="FONT-SIZE: 13px; MARGIN: 0px; COLOR: #000000; TEXT-INDENT: 0px; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; TEXT-ALIGN: justify"> </DIV> <DIV style="FONT-SIZE: 13px; MARGIN: 0px; COLOR: #000000; TEXT-INDENT: 0px; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; TEXT-ALIGN: justify"><A name="[문서의 처음]"></A></DIV> <DIV style="FONT-SIZE: 13px; MARGIN: 0px 7px; COLOR: #000000; TEXT-INDENT: 0px; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; TEXT-ALIGN: justify"><SPAN style="FONT-SIZE: 13px; COLOR: #000000; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; TEXT-ALIGN: justify">2. 집합 S의 원소의 개수를 n(S), 부분집합의 개수를 |S|라고 하자</SPAN> </DIV> <DIV style="FONT-SIZE: 13px; MARGIN: 0px 7px; COLOR: #000000; TEXT-INDENT: 0px; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; TEXT-ALIGN: justify"><SPAN style="FONT-SIZE: 13px; COLOR: #000000; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; TEXT-ALIGN: justify">집합 A, B, C에 대하여 <BR>|A|+|B|+|C| =|A∩B∩C|, n(A)=n(B)=100일 때,</SPAN> </DIV> <DIV style="FONT-SIZE: 13px; MARGIN: 0px 7px; COLOR: #000000; TEXT-INDENT: 0px; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; TEXT-ALIGN: justify"><SPAN style="FONT-SIZE: 13px; COLOR: #000000; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; TEXT-ALIGN: justify">n(A∩B∩C)의 최소값을 구하라</SPAN> </DIV> <DIV style="FONT-SIZE: 13px; MARGIN: 0px 7px; COLOR: #000000; TEXT-INDENT: 0px; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; TEXT-ALIGN: justify"> </DIV> <DIV style="FONT-SIZE: 13px; MARGIN: 0px 7px; COLOR: #000000; TEXT-INDENT: 0px; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; TEXT-ALIGN: justify"> <DIV style="FONT-SIZE: 13px; MARGIN: 0px; COLOR: #000000; TEXT-INDENT: 0px; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; TEXT-ALIGN: justify"><SPAN style="FONT-SIZE: 13px; COLOR: #000000; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; TEXT-ALIGN: justify">3. 2/1+i</SPAN> 는 a+bi (i는 허수단위) 로 고치기 전까지는 복소수라고 말할수 없요?</DIV></DIV> <P> </P>
