Judges at an art competition must select first-, second-, and third-place winners from an exhibition of 12 paintings. In how many different ways can the winning paintings be chosen?

A.
1,320
B.
440
C.
220
D.
18

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