27 cubes are stacked together to form a 3 by 3 by 3 cube. if the outside of the larger cube is painted, there are 6 smaller cubes with only one face painted. how many cubes are painted on only one face when 64 cubes are stacked together to form a 4 by 4 by 4 cube? hint: think of a rubik's cube

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.