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Function: require_once

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수학동아 2018.12.28 02:44 조회 1048
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젓가락 한 쌍, 신발 한 켤레, 치약-칫솔, 남자-여자…. 짝이 없으면 존재감이 약해지는 것들이 많아. 이처럼 짝이라는 것은 꽤 소중한 존재야. 이번 달에 살펴볼 숫자 2는 가장 작은 짝수라는 점에서 짝이라는 단어와 밀접한 관련이 있어. 짝수의 대표 주자인 2에 대한 여행을 떠나 보자.

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