Drinking Party


Assume that wine #777 is the poisoned one:
Wine 1-100
Wine
101-200
Wine 201-300
Wine 301-400
Wine 401-500
Wine 501-600
Wine 601-700
Wine 701-800
Wine 801-900
Wine 901-1000
Rat 1
Rat 2
Rat 3
Rat 4
Rat 5
Rat 6
Rat 7
Rat 8 (dead)
Rat 9
Rat 10

Since Rat 8 died, we know that the poison wine must be in Wine 701 to 800. We continue the same process as following:

Wine 701-711
Wine 712-722
Wine 723-733
Wine 734-744
Wine 745-755
Wine 756-766
Wine 767-777
Wine 778-788
Wine 789-800
Rat 1
Rat 2
Rat 3
Rat 4
Rat 5
Rat 6
Rat 7 (dead)
Rat 9
Rat 10

Wine 767
Wine 768
Wine 769
Wine 770
Wine 771
Wine 772 & 773
Wine 774 & 775
Wine 776 & 777
Rat 1
Rat 2
Rat 3
Rat 4
Rat 5
Rat 6
Rat 9
Rat 10 (dead)

Wine 776
Wine 777
Rat 1
Rat 2 (dead)

Now, we know that Wine 777 is poisoned, and the number of remaining rats alive is 6 – Rat 1, 3, 4, 5, 6, and 9.

Comments

Post a Comment

Popular posts from this blog

Thinking about Math Textbooks

How would you respond to the examples given here - as a teacher and as a former student? -        As mentioned in the paper, I believe that teachers also should be mindful of language they speak in classrooms. They need to use approachable language as much as possible, so that students feel more relaxed in classroom and can have a deep, thoughtful conversation with their peers especially when encountered with challenging problem-solving questions. -        During my short practicum, my SA advised me to use indirect instruction. This approach allows students a moment to think about their behaviour and hopefully fix their “inappropriate” behaviours on their own; I think it is some kind of metacognitive strategy that teachers can use in classrooms. -        Looking back to my learning experience in Korea – from elementary to high schools -, I was so used to the environment, ...
Read more

Final Reflection

·       Learning math in a traditional manner: o    Since I had studied math in a traditional manner in Korea and Canada, it was quite challenging to approach the new BC curriculum from a different perspective. Thankfully, the readings, math fair experiences from EDCP 343 and the in-class puzzles have inspired me to be creative in how I can combine math concepts with other subject areas, which hopefully attract students’ interests in learning math. ·       Micro-teaching activities: o    Whether the topic was academic or not, I found it very interesting and helpful. Not only did I had an opportunity to teach in front of other teacher candidates, but I was able to observe other and reflect on my teaching style.
Read more

The Scales Problem

A market vendor sells dried cooking herbs in whole-number amounts from 1 to 40 grams. The vendor has an old-fashioned two pan weigh scale, and has exactly four weights of different amounts that allows them to weigh out any of these amounts of herbs -- without using the herbs or any other object as an auxiliary weight. 1.      What are the values of the four weights? -        Since the lightest weight is 1 gram, one of the four weights must be 1 gram. -        Now, we have the following weights to measure herbs that weigh from 1 to 40 grams: 1, a, b, and c, where a < b < c . -        I couldn’t see the pattern right away, but I was sure that there must be a pattern for this problem. -        I did lots of trial-and-error methods and figured out that the four weights have to be 1, 3, 9, and 27. -   ...
Read more