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RRB NTPC 12 April 2016 Shift 3 Question 26

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 26

Which product is the most popular one?

Solution

X = 98

Y = 48

Z = Total -X-Y -(X AND Z) - (X and Y) - (X and Y)

z = (274 -98-48-14-39-23) = 52

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

Y and Z= 39

X and Z = 14

X , Y and Z = 22

so. most popular = X



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