1.We survey 600 adults about which modes of transportation they have used in the past year. We find that: 100 traveled by plane but not train 150 by train but not by plane 120 by bus but not by train or plane 100 by both bus and plane 40 by all three 440 by bus or train (a) Represent the data on the Venn diagram (b) Find the probability that a person selected at random travels by only one mode.