There are 4 red and 8 blue marbles in a bag. Mark draws a blue marble out of the bag and does not replace it Mark draws a second blue marble out of the bag and does not replace it.
What is the probability that the next marble he draws will also be blue?

Aroulette wheel has 38 slots in which the ball can land. two of the slots are green, 18 are red, and 18 are black. the ball is equally likely to land in any slot. the roulette wheel is going to be spun twice, and the outcomes of the two spins are independent.the probability that it lands one time on red and another time on black in any order is(a) 0.5 (b) 0.25 (c) 0.4488 (d) 0.2244