Question 98621
There are 23 marbles in all ...
Chances of selecting a red ball: 8/23
Chances of selecting a red ball again: 7/22
Chances of selecting a red ball once more: 6/21
(8/23)(7/22)(6/21) = 336/10,626 = 168/5,313 = 56/1,771
There are 23 marbles in all ...
Chances of selecting a blue ball: 3/23
Chances of selecting a blue ball again: 2/22
Chances of selecting a blue ball once more: 1/21
(3/23)(2/22)(1/21) = 6/10,626 = 1/1,771
56/1,771 + 1/1,771 = 57/1,771