Another Problem encountered in Quant Interview

來源: kingoftheworld 於 2009-09-18 14:37:54 [] [舊帖] [給我悄悄話] 閱讀數 : (232 bytes)

12 Marbles, 1 is odd in weight, and all the rest 11 are equal in weight. You have a balance scale. Within three weighings, how do you figure out which one is the odd one and whether it is heavier or lighter than one of the other 11?

所有跟帖： 

• should group them 6,6 then 2,2,2 and then 1, 1, right? -tsrj73- ♂ 給 tsrj73 發送悄悄話 (0 bytes) () 09/19/2009 postreply 09:07:25

• Group them in three each. Weigh twice. Then... -^V^- ♂ 給 ^V^ 發送悄悄話 ^V^ 的博客首頁 (0 bytes) () 09/19/2009 postreply 14:57:38

• This is the correct answer -小兔子123- ♀ 給 小兔子123 發送悄悄話 小兔子123 的博客首頁 (0 bytes) () 09/29/2009 postreply 00:14:04

• 回複：NoOne gets this right yet -kingoftheworld- ♂ 給 kingoftheworld 發送悄悄話 (0 bytes) () 09/20/2009 postreply 08:18:38

• group in 4... -沒得吃- ♀ 給 沒得吃 發送悄悄話 (0 bytes) () 09/20/2009 postreply 20:47:42

• 難道又是華爾街的精英們就是這樣忽悠大眾把口袋掏空的。嗬嗬。 -九陽- ♂ 給 九陽 發送悄悄話 九陽 的博客首頁 (45 bytes) () 09/22/2009 postreply 18:01:05

• 回複：Another Problem encountered in Quant Interview -listeriabacillus- ♂ 給 listeriabacillus 發送悄悄話 (81 bytes) () 09/22/2009 postreply 22:02:32

• 回複：Another Problem encountered in Quant Interview -yhz04- ♂ 給 yhz04 發送悄悄話 (8 bytes) () 10/29/2009 postreply 18:06:11

• 回複：回複：Another Problem encountered in Quant Interview -yhz04- ♂ 給 yhz04 發送悄悄話 (565 bytes) () 10/29/2009 postreply 18:17:22

請您先登陸，再發跟帖！