See directions..Round all answers to 3 decimal places .please help me :)

(b) 6 (2 points) Of the 38 plays attributed to Shakespeare, 18 are comedies, 10 are tragedies and 10 are histories. one play is randomly selected from Shakespeare's 38 plays. Roun all answers to 3 decimal places. (a) Find the probability of selecting a comedy. (a) (b) Find the probability of selecting a history. ( b ) (c) Find the probability of selecting a tragedy or a history. (c) (d) Find the probability of selecting a comedy or a history