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-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?

Question:

-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

Answer» a. 60

Note: The above multiple-choice question is for all general and Competitive Exams in India