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wiki:donuts:fall2014
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wiki:donuts:fall2014 [2014/12/17 14:56] (current) jmb438 |
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| [[wiki:donuts:fall2014:answers:pirates|answer]] | [[wiki:donuts:fall2014:answers:pirates|answer]] | ||
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| + | ===== Sticks ===== | ||
| + | |||
| + | There are two sticks. Each stick will burn in 1 hr, but the rate at which it burns is unknown and non-uniform. How can you use these sticks to time 15 minutes? ((Wu Yifeng, Dec 1)) | ||
| + | |||
| + | [[wiki:donuts:fall2014:answers:sticks|answer]] | ||
| + | |||
| + | ===== Camel Herders ===== | ||
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| + | 2 camel herders (Jack and Bill) decide to sell their camels and buy some sheep. When they get to the market, they find out that the price to sell a camel is equal to the total number of camels in your herd when you arrive at the market. To increase their money, they decide to pool their camels into one big herd before they arrive, then sell them all. They take the money and buy sheep at $10 each. After they buy the sheep, they have some money left over and use all of it to buy one goat. It turns out that when they split the sheep into two equal herds, there is one extra sheep. Jack has the larger herd and tells Bill that he can have the goat. Bill says this is still not a fair split, so Jack takes one of his own dogs and gives it to Bill. Bill and Jack both agree that this is now a fair split. How much is one dog worth? ((Josh Sypherd, Dec 8)) | ||
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| + | [[wiki:donuts:fall2014:answers:camels|answer]] | ||
| + | |||
| + | ===== Square Digits ===== | ||
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| + | Let N be some two-digit number, with the digits denoted as A and B. | ||
| + | Let N<sup>2</sup> be a three-digit number with the digits denoted as C, A and B. | ||
| + | N = AB | ||
| + | N^2 = CAB | ||
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| + | What digit does C represent? ((Dr. Jeffs, Dec 16)) | ||
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| + | [[wiki:donuts:fall2014:answers:square|answer]] | ||
| ===== Questions Asked ===== | ===== Questions Asked ===== | ||
| | Junming Diao | 2 | | | Junming Diao | 2 | | ||
| - | | Jay Brady | 0 | | + | | Jay Brady | 1 | |
| - | | Josh Sypherd | 2 | | + | | Josh Sypherd | 3 | |
| - | | Dr. Jeffs | 2 | | + | | Dr. Jeffs | 3 | |
| - | | Richard Black | 1 | | + | | Richard Black | 2 | |
| | Dr. Warnick | 1 | | | Dr. Warnick | 1 | | ||
| - | | Mitch Burnett | 0 | | + | | Wu Yifeng | 3 | |
| - | | Mark Ruzindana | 0 | | + | |
| - | | Wu Yifeng | 2 | | + | |
wiki/donuts/fall2014.1416948282.txt.gz · Last modified: 2014/11/25 13:44 by jmb438