News for hackers. Stuff that matters.

A comment on Oxford Undergrad CS Admission Interview Problems. Parent comment

Re:Oxford Undergrad CS Admission Interview Problems by hasha on Friday January 14, 2011 @11:18AM (#2104019)
I don't think so. After each drawing the number of whites is congruent modulo 2 to the initial number of whites. Hence, when there are two beans left, one will be white and the other black so the last bean will be white.
[ Parent | on HN ]
Re:Oxford Undergrad CS Admission Interview Problems by JoachimSchipper on Friday January 14, 2011 @11:21AM (#2104030)
That's the right answer, yes (you can even skip "Hence, when there...the other black"); but what do you mean by "I don't think so"?
[ Parent | on HN ]