Tag Archives: Logic

[Soln] Identifying the weight of one ingot

Posted on 11 Jan 2022 by kjytay

King Hiero II of Syracuse has 11 identical-looking metallic ingots. The king knows that the weights of the ingots are equal to 1, 2, …, 11 libras, in some order. He also has a bag, which would be ripped apart … Continue reading →

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[Hints] Identifying the weight of one ingot

Posted on 10 Jan 2022 by kjytay
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Identifying the weight of one ingot

Posted on 9 Jan 2022 by kjytay

King Hiero II of Syracuse has 11 identical-looking metallic ingots. The king knows that the weights of the ingots are equal to 1, 2, …, 11 libras, in some order. He also has a bag, which would be ripped apart … Continue reading →

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I don’t know, I know you don’t know, now we all know

Posted on 14 Apr 2015 by kjytay

A logic problem (supposedly from a Singaporean Math Olympiad paper) has been making its rounds on the internet, it would be remiss of me not to share it: (Image courtesy of Kenneth Kong/Facebook) The solution to this problem has been … Continue reading →

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[Soln] 2013 Singapore MO (Junior Rd 1) Problem 6

Posted on 7 Oct 2014 by kjytay

2013 SMO (Junior-Rd1) 6. Five young ladies were seated around a circular table. Miss Ong was sitting between Miss Lim and Miss Mak. Ellie was sitting between Cindy and Miss Nai. Miss Lim was between Ellie and Amy. Lastly, Beatrice was … Continue reading →

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2013 Singapore MO (Junior Rd 1) Problem 6

Posted on 6 Oct 2014 by kjytay

2013 SMO (Junior-Rd1) 6. Five young ladies were seated around a circular table. Miss Ong was sitting between Miss Lim and Miss Mak. Ellie was sitting between Cindy and Miss Nai. Miss Lim was between Ellie and Amy. Lastly, Beatrice was … Continue reading →

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2014 Singapore MO (Junior Rd 1) Problem 5

Posted on 28 Jul 2014 by kjytay

2014 SMO (Junior-Rd1) 5. Andrew, Catherine, Michael, Nick and Sally ordered different items for lunch. These are (in no particular order): cheese sandwich, chicken rice, duck rice, noodles and steak. Find out what Catherine had for lunch if we are given … Continue reading →

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