2012年7月23日
Logic Five
摘要： A bag has an unknown number of colored objects, with equal numbers of each color. Adding 20 objects of a new color to the bag would not change the probability of drawing (without replacement) two objects of the same color.How many objects are in the bag? (Before the extra objects are added.)列出来的等式含有 阅读全文
posted @ 2012-07-23 21:01 handt 阅读(212) 评论(0) 推荐(0)
Logic Puzzle Challenge 2
摘要： Divide $1048 (in whole $ increments) into a number of bags so that I can ask for any amount between $1 and $1048, and you can give me the proper amount by giving me a certain number of these bags without opening them.What is the minimum number of bags you will require?通过二叉树的方式做出来了1048 = 524 + 524524 阅读全文
posted @ 2012-07-23 16:33 handt 阅读(298) 评论(0) 推荐(0)