Observe the given diagram carefully and answer the question that follows. The numbers in different sections indicate the number of persons.

How many such persons are there in the above group who are not artists and poets but are only professors? ​

Given: How many such persons are there in the above group who are not artists and poets but are only professors?
Circle denotes = professors
Triangle denotes = artists
Rhombus denotes = poets

From the  Venn diagram only 12 and 15 professors are there who are not in the section of artist and poets. the next = 12+15 = 27
Thus, the correct answer is (a)
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