SOLUTION: A​ 12-sided die is rolled. The set of equally likely outcomes is​ {1,2,3,4,5,6,7,8,9,10,11,12}. Find the probability of rolling a number less than 4.

Algebra ->  Probability-and-statistics -> SOLUTION: A​ 12-sided die is rolled. The set of equally likely outcomes is​ {1,2,3,4,5,6,7,8,9,10,11,12}. Find the probability of rolling a number less than 4.      Log On

There are  12  equally likely outcomes (the space of events).


Of them, 3 (three) are favorable:  1, 2, and 3


Therefore, the probability is   =  = 0.25 = 25%.