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Function: driver

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Function: model

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Function: getFloatingMyInfo

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Function: get_footer

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Line: 315
Function: require_once

수학동아 - 폴리매스
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[창의 퍼즐] 코로나 20
아인수타인 2020.04.06 06:54 조회 697
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페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

5월, 코로나 19사태가 드디어 잡혔다. 하지만 2020년 12월, 코로나 19가 휠씬 더 강력한 변종, '코로나 20'으로 다시 등장했다. 코로나 20은 환자 한 명이 하루에 무려 5명을 감염시킬 수 있다. 게다가 코로나 20의 치사율은 20%나 된다(코로나 20은 너무 치명적이라서 사망한 사람들은 코로나 20에 감염된 바로 다음 날 죽는다). 전 세계 인구가 70억 명일 때, 코로나 20이 전 세계를 창궐하려면(전 세계 사람들을 모두 감염시키려면) 며칠이 필요할까?

설마 죽은 사람이 새로 감염시킬 수 있다고 생각하고 계산하는 건 아니겠죠

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