SOLUTION: a box contains 10 marbles 7 of which are black and 3 are reds, 3 marbles are drawn one after the other without replacement find the probability of choosing one red , one black, an

Algebra ->  Probability-and-statistics -> SOLUTION: a box contains 10 marbles 7 of which are black and 3 are reds, 3 marbles are drawn one after the other without replacement find the probability of choosing one red , one black, an      Log On


   

Question 1194552: a box contains 10 marbles 7 of which are black and 3 are reds, 3 marbles are drawn one after the other without replacement find the probability of choosing one red , one black, and one red marble
Answer by ikleyn(52914) About Me  (Show Source):
You can put this solution on YOUR website!
.
a box contains 10 marbles 7 of which are black and 3 are reds, 3 marbles are drawn one after the other
without replacement find the probability of choosing one red , one black, and one red marble
~~~~~~~~~~~~~~~~


I read the problem in this way 

        a box contains 10 marbles 7 of which  are black and 3 are reds, 3 marbles are drawn one after the other 
        without replacement find the probability of choosing one red , one black, and one red marble,
                        highlight%28in_this_order%29.

                    Solution


    P = %283%2F10%29%2A%287%2F9%29%2A%282%2F8%29 = 42%2F720 = 7%2F120.    ANSWER

Solved.

The formulas are self-explanatory.