the owner of a zoo described to take a random sample of the zoos visitors to find out which exhibit was the visitor's favorite. the results are shown in the provided table. if the zoo has 819 visitors , about how many would say the gorillas is their favorite exhibit?

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