A study was conducted of the trend in the design of social robots. In a random sample of 108 socialrobots, 63 were built withlegsonly, 22 were built withwheelsonly, 10 were built withbothlegsandwheels, and 13 were built withneitherlegsnorwheels. Use the rule of complements to find the probability that a randomly selected social robot is designed withlegs,wheels,orneither,butnotboth.