Question 1179903
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(a)  {{{2/15}}}.


(b)  Good advise:  make a list of favorable events.


     Calculate the number of favorable elements in this list.


     Then take the ratio of this "favorable" to the total, which is 15.


     The ratio will be your answer.
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You are instructed - so, &nbsp;you know the way.


If you still have questions, &nbsp;do not hesitate to ask me.



Happy learning &nbsp;(!)