Robotics manufacturers can design mobility features in one of several ways. Roberts can have legs, wheels, both legs and wheels, or no legs or wheels. Using a random sample of 106 robots, researchers found 63 had legs only, 20 had wheels only, 8 had both legs and wheels, and 15 had no legs or wheels. Use the RULE OF COMPLEMENTS to find the probability that a randomly selected robot will have either legs or wheels.