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In the following questions are to be based on the details given below.
 
A salesman visits 274 houses in a town to find out the views about three products X, Y and Z. He found that 157 use X, 98 use only X, 22 use all the three, 14 use X and Z but not Y, 39 use Y and Z, 48 use only Y.
 
What fraction used at least two products?
 
         
       
      
      
      
          
      
      
      
      
      
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