Q. 124.3( 6 Votes )

In a village ther

Answer :

Given


total no families in the village n(AB) = 60


No. of families speak only Tamil n(A) = 28


No. of families speak only Urdu n(B) = 20


To find families speak both Tamil and Urdu n(AB) let us use the result


n(AB) = n(A) + n(B) – n(AB)


n(AB) = n(AB)– [n(A) + n(B)]


= 60 – [28 + 20]


= 60 – 48


= 12


Number of families speak both Tamil and Urdu are 12


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