Correct Answer: .
Explanation:
Given :- Total population = 70,
Drinking coffee and tea = 20 and drinking coffee = 35
(1) 35 drink only coffee .
(2) Drinking only tea = Total population - ( Drinking coffee and tea + Drinking coffee ) = 70 - ( 20 + 35 ) = 15
∴ 15 drink only tea .
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