Question 1179905
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(a)  There are 6 possible outcomes; of them, the favorable are { 1, 3, 4, 5 }.


     Four favorable of total 6 give the probability of  {{{4/6}}} = {{{2/3}}}.




(b)  Of 6 possible outcomes, there are 3 favorable  {2, 3, 5 }.


     The probability is  {{{3/6}}} = {{{1/2}}}.
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Solved, answered and explained.