从网上找出的结果是不对的,任何指定的序列概率都一样.

有学生请我选LOTO号码,我就写1,2,3,4,5,6....他惊...

我做一个2bits,二十几位,想想...

00---0-----0

01---1---(1+2+2+3+3+3)/6=14/6

10---1---(...........)/6=14/6

11---1---(...........)/6=14/6

1/4*(0+14/6+14/6+14/6)=1.75   平均1.75位.

所有跟帖： 

• 网上的结果应没有问题，这是流传很广的WALL街的面试题。 -wxcfan123- ♂ (66 bytes) () 09/18/2011 postreply 14:37:59

• 请示网址, -jinjing- ♀ (0 bytes) () 09/19/2011 postreply 10:48:40

• 回复：请示网址, -wxcfan123- ♂ (257 bytes) () 09/19/2011 postreply 12:56:51

• Thanks,the artical is not professonal. Believe youself. -jinjing- ♀ (93 bytes) () 09/19/2011 postreply 15:01:47

• This link has the proof of two and three head -wxcfan123- ♂ (115 bytes) () 09/19/2011 postreply 12:59:52