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Function: driver
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Line: 799
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File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
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Function: model
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
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Function: getFloatingMyInfo
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Line: 559
Function: get_footer
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/index.php
Line: 315
Function: require_once
수학동아 - 폴리매스
함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
K→C≡N
2019.11.02 06:59
조회 689
평소 돈이 없던 휠릭시스는 친구의 자물쇠를 따서 돈을 훔치기로 했다.
0000에서 시작해 9999까지 한 번씩 시도해 보아야 하며,
숫자 순서대로 해야 한다.
한 개를 돌리는데 1초가 걸리고, 맞는지 자물쇠를 돌려볼 때 1초가 걸린다면,
최악의 경우 (9999)일때, 몇 초가 걸리는가?
풀이과정도 써 주세요.
(예를 들어 0000에서 0001이 되는데 1초, 따는데 1초, 0002가 되는데 1초)
(0009에서 0010이 될 때는 0009>0000>0010>따보기 로 총 3초가 걸린다.)
(0099에서 0100이 될 때는 0099>0090>0000>0100>따보기 로 총 4초가 걸린다.)
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21세기오일러
Lv.11
2019.11.02 07:10
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확인요청중
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K→C≡N
Lv.11
2019.11.02 17:15
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21세기오일러
Lv.11
2019.11.02 18:25
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