×

Loading...

:: C 2-4 / P 2-4 = 6/ (4x4) = 3/8, p 2-4 means all the possibilities that randomly choose 2 children of four.

ondway (一枫家新)
(#364960@0)
2002-2-10 -04:00
This post has been archived. It cannot be replied.
Page address has been copied. To share, click to copy page address.
Share Online by QR Code

Back To Topic: GMAT题,一对夫妇生了4个小孩,问2男2女的概率是多少?我的答案是1/5,但友人说是3/8。

Back To Forum: HOME枫下论坛枫下论坛主坛枫下沙龙谈天说地