Urgent math needed ! will mark 1. a bag contains the letters of the word “probability”. a. if a single tile is chosen at random, what is the probability the letter “b” is chosen? (show your work). b. if a single tile is chosen at random, what is the probability a vowel or a “t”? (show your work). c. if two tiles are chosen (with replacement) what is the probability of choosing an “o” and a “b”? (show your work).