Fuel efficiency is a rate that represents the number of litres of fuel required for the
driving distance of 100 km. For example,
the fuel efficiency for a certain model of
car is }1
9
0
.
0
5
k
L
m}. To compare the fuel
efficiency of different cars, you need to
determine the number of litres of fuel used
per 100 km for each car.

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