The new movie that opened yesterday was so boring that half of the people in the theatre left after the first 45 min. in the next 15 min, half of the remaining people left. before the movie ended another 18 people left, so at the end of the movie there were only 35 remaining. how many people were there at the start of the movie?

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.