Well done, Amaryllis! You've hit the nail right on the head. How smart of you! Your explanation is so accurate that nobody would give any better explanation.
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Thanks a lot. Have a wonderful day.
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Steroids
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Dear Steroids,
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I have had hard time with such that question since I was a student.
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But, I can solve the first question.
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If we take out the beads in order like my explanation, we could find it out.
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First, we have to name the bags as 1~ 5 in order.
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Next,we have to put those beads from the bags enough for the number of the very bag. That's to say, one from the first bag, two beads from the second bag...
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So, even if we use the scale once with those beads, oops! I'll add it later . A customer is coming.
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I am back.
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Now, we have to weigh all of them which we took out from the each bag at once. Thus, if the third bag is the very one which each bead weighs 9 kg, the division on a scale will point it out as 147 kg. And if the second bag is the very one , the division on a scale will point it out as 148 kg. Right?
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Rest is history. My explanation is not sufficient you think?
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And the next question is too hard. Search me.
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I couldn't be patient because I'd like to know the answer .
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Have a heart. Please, answer me in secret. ^^
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직성이 안 풀려서 또 다시 말해야지. 헤헤.
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그러니깐요, 한 번만 저울을 이용해서 그 무게가 미달인 구슬백을 찾아야 하걸랑요. 백마다 번호을 매긴다. 해서 첫번째 백에선 한 알을 두번째 백에선 두 알을, 이런 식으로 15알을 꺼내어서 한꺼번에 저울에 답니다. 허면, 어찌 되~엘까요? 두번째 백이 범인(?)이면, 2KG 모자란 148KG 이 될테고, 다섯번째 백이 9KG짜리 구슬 백이면 145KG이 되는거죠. 제 영어가 이럴 때, 짧다는 걸 확실히 느끼네요. 아유! 가슴이 막 답답해져요. 영작이 안 되니깐두루.
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Steroid 주무시지 말고 빨랑 답 말해줘요. 애기가 안 깨워요?
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Hi, all.
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Here are two brain teasers that seem to be very perplexing and challenging. Could you solve any of these two posers?
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1. Bags and Beads:
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You are given 5 bags. There are 10 beads in each of the bags. In four of the bags, the beads each weigh 10 kilograms. In the remaining bag, each bead weighs only 9 kilograms. All the bags and beads look identical. You must find out which bag has the lighter beads. The problem is that all the bags look identical and all the beads look identical. You can use a scale, but it has to be a single-tray scale, not a two-tray balance scale. Also, you may use the scale only once. How can you find out which bag has the lighter beads?
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2. The GRY Riddle:
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Think of words ending in -GRY. Angry and hungry are two of them. There are only three words in the English language. What is the third word? The word is something that everyone uses everyday. If you have listened carefully, I have already told you what it is.
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Too difficult? Let me drop a hint for number two. Remember that a riddle has a trick with the words or usage of the words. Some words or sentences are used just to misdirect your idea or thought.
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Correct answers will be given sooner or later.
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Just try and enjoy it. Have a great day!
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Sincerely,
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Steroids
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