-In a statistical investigation of 1000 families of a city, it was found that 60 families had neither a radio nor a TV. 790 families had a radio and 210 families had a TV. How many families in the sample have both?
A)60
B)0
C)90
D)100

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The Answer of -In a statistical investigation of 1000 families of a city, it was found that 60 families had neither a radio nor a TV. 790 families had a radio and 210 families had a TV. How many families in the sample have both?
A)60
B)0
C)90
D)100

-In a Statistical Investigation of 1000 Families of a City