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An advertising agency finds that, of its 170 clients, 115 use television, 110 use radio and 130 use magazines. also, 85 use television and magazines, 75 use television and radio, 95 use radio and magazines, 70 use all the three. Find 1)how many use only television2) how many use only radio3) how many use television and magazine but not radio.

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eginarrayl	extLet televison be denoted by T, 	extRadio by R and magazine by M.\ 	extTotal client=170\ T=115, R=110, M=130\ left(Tcap R
ight)=75, left(Tcap M
ight)=85, left(Rcap M
ight)=95, left(Tcap Rcap M
ight)=70\ left(1
ight) 	extClient only use television=T =115\ left(2
ight) 	extClient only use Radio=110\ left(3
ight) 	extClient use television and magazine=left(Tcap M
ight)=85endarray

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Deependra Verma

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