브루스 윌리스가 주연한 '다이하드 3'란 영화가 있었습니다.
1995년 나온 영화인데 굉장히 인기 있었어요
이 영화에서 수수께끼가 나오는데, 이 영화를 주제로 하여 중2학생들에게
수행평가 겸 분단학습을 시켜보았어요. IQ 150 학생이 5분 만에 맞추더군요.
In the movie Die Hard 3, our heros, John McClain (Bruce Willis) and Zeus
(Samuel L. Jackson), are at the bidding of the evil Peter Krieg (Jeremy Irons).
First they are sent to the pay phone, then to the subway, and finally to the park.
It is here that they must make exactly four gallons from five and three
gallon jugs. They did it just in time.
How did they do it? The steps are simple, once you see them.
(1) Fill the five gallon jug. Three gallon jug is empty.
(2) Empty three gallons from the five gallon jug into the
three gallon jug.
(3) There remains ________ gallons in the five gallon jug.
Empty the three gallon jug.
(4) Pour the ________ gallons into the three gallon jug.
(5) Fill the five gallon jug and pour ________ gallon from it
into the three gallon jug - filling the three gallon jug.
(6) _______ gallons remain in the five gallon jug. We have
solved the problem.
첫댓글 (3) two (4) five (5) one (6) four. It's a piece of cake, isn't it?
Hint
Just start filling up one of the jugs all the way and pouring it into the other one,
and see where that gets you.
Solution
(5, 0)–>(2, 3)–>(2, 0)–>(0, 2)–>(5, 2)–>(4, 3)