Theodoros Kiriakopoulos Posted October 22, 2021 Share Posted October 22, 2021 See example 3 at https://math.berkeley.edu/~ehallman/summer-2015/problemSheet6-2-sols.pdf Why the answer is 105/221 and not (3/8)(40/100)/(3/8(40/100)+2/9(30/100)+(6/7)(30/100))=63/199? Link to comment Share on other sites More sharing options...
Theodoros Kiriakopoulos Posted October 25, 2021 Author Share Posted October 25, 2021 (edited) Stupid question of mine, it says that A BLACK ball is drawn, not a red as in example 1 and 2. Edited October 25, 2021 by Theodoros Kiriakopoulos Link to comment Share on other sites More sharing options...
Phi for All Posted October 26, 2021 Share Posted October 26, 2021 21 hours ago, Theodoros Kiriakopoulos said: Stupid question of mine, it says that A BLACK ball is drawn, not a red as in example 1 and 2. ! Moderator Note Are you saying you've figured this out and no longer need any help, or should I leave this open? Link to comment Share on other sites More sharing options...
Theodoros Kiriakopoulos Posted October 28, 2021 Author Share Posted October 28, 2021 I've figured this out. Link to comment Share on other sites More sharing options...
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