In the following Ven diagram, diagram, the 'Pentagon' stands for 'Architects', the ' Circle ' Stands for 'Morning - walkers' and the 'Square' stands for 'Diploma holder'. The given number represents the number of persons in that particular category. How many diploma holders are also morning walkers but NOT architects?

Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 40.
The number of diploma holders who are morning walkers but not architects = The number that is common to both square and the circle = 40