18/07/05 18:43:07.29 bn3tqJqU.net
>>578
知らないよ。
調べれば答えられるようなことしか聞けないのが、底辺シリツ医大卒だなぁ。
これ答えられる？問題の意味すら理解できないんじゃないの
Two urns contain the same total numbers of balls, some blacks and some whites in each.
From each urn are drawn n ( > 3) balls with replacement.
Find the number of drawings and the composition of the two urns so that the probability that all white balls are drawn from the first urn is equal to the probability that the drawing from the second is either all whites or all blacks.