Q. 164.0( 91 Votes )

In a survey it wa

Answer :

Let us first assume A, B and C be the set of people who like product A, product B and product C respectively


Now, it is given in the question that:


Number of students who like product A, n (A) = 21


Number of students who like product B, n (B) = 26


Number of students who like product C, n (C) = 29


Number of students who like both products A and B,


Number of students who like both products A and C,


Number of students who like both product C and B,


Number of students who like all three product,


On the basis of given condition the venn diagram for the following question can be drawn as follows:



From the venn diagram, it can clearly be seen that:


Number of students who only like product C = {29 – (4 + 8 + 6)}


= {29 – 18}


= 11 students

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