<p fr-original-style="" style="margin-top: 0px; margin-bottom: 1rem; box-sizing: border-box;">이것도 사실 별 내용 없음</p><p fr-original-style="" style="margin-top: 0px; margin-bottom: 1rem; box-sizing: border-box;">부분집합</p><p fr-original-style="" style="margin-top: 0px; margin-bottom: 1rem; box-sizing: border-box;">1. 집합 A, B가 있을 때, A의 모든 원소가 B에 속한다면 A는 B의 부분집합이다.</p><p fr-original-style="" style="margin-top: 0px; margin-bottom: 1rem; box-sizing: border-box;">2. 집합 A,B,C가 있을 때, A⊂B이고 B⊂C 이면 A⊂C 이다.</p><p fr-original-style="" style="margin-top: 0px; margin-bottom: 1rem; box-sizing: border-box;">3. 집합 A,B 가 있을 때, <span fr-original-style="color: rgb(65, 65, 65); font-family: sans-serif; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;" id="isPasted" style="color: rgb(65, 65, 65); font-family: sans-serif; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-style: initial; text-decoration-color: initial; float: none; display: inline !important; box-sizing: border-box;">A⊂B 이고</span> <span fr-original-style="color: rgb(65, 65, 65); font-family: sans-serif; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;" id="isPasted" style="color: rgb(65, 65, 65); font-family: sans-serif; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-style: initial; text-decoration-color: initial; float: none; display: inline !important; box-sizing: border-box;">B⊂A 이면 A=B이다. 반대도 성립.</span></p><p fr-original-style="" style="margin-top: 0px; margin-bottom: 1rem; box-sizing: border-box;"><br fr-original-style="" style="box-sizing: border-box;"></p><p fr-original-style="" style="margin-top: 0px; margin-bottom: 1rem; box-sizing: border-box;"><span fr-original-style="" id="isPasted" style="box-sizing: border-box;">부분집합의 개수 구하기</span></p><p fr-original-style="" style="margin-top: 0px; margin-bottom: 1rem; box-sizing: border-box;"><span fr-original-style="" style="box-sizing: border-box;">2의 n승(n은 원소 개수) <- 부분집합을 구하고자하는 집합 전체와 공집합 포함</span></p>
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