In the following Venn diagram, the pentagon stands for 'Librarians', the rectangle stands for 'Income Tax Payers', and the circle stands for 'Post-graduates'. The given numbers represent the number of persons in that particular category.
How many librarians are there who are also post-graduates?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 55.
The number of librarians who are also post-graduates = Number that is common to pentagon and circle = 30 + 25 = 55