An advertising ogeucy finds that of ite 170 chents, and 130 Use Hagazines. Also 85 Ual Telansion and Hasazines,7š use telensnon and Radio, 95 ude Radio and Magazines, 70 use all three. Draw a Nenn' Diagranm these data. find O how 115 dse Telersion,l1o use Radio to te menylal ude Radio ?

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