Step-by-step explanation: Let the event of getting Country, Rock and roll, Blues be E, E1 , E3 respectively.
P(E1) = No. of favorable outcomes / Total no. of outcomes
= 11/ 11+17+8 = 11/36
P(E2) = 17/36
P(E3) = 8/36 = 4/18 = 2/9
