Instructions

In the following questions are to be based on the details given below:
A salesman visits 274 houses in a town to fmd 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

Question 28

What fraction used at least two products?

Solution

X and Y = (157-98-14-22) = 23

so,

at least two products

=> 14 + 39 + 23 = 76

fraction = $$\frac{76}{274}$$

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RRB NTPC 12 April 2016 Shift 3

What fraction used at least two products?

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