In the Venn diagram given below, the 'Circle' represents 'boys'; the 'Triangle' represents 'married', and the 'Square' represents 'the persons who own pets'. Then select the are which represents boys who are married but do not own pets?

4

 'Circle' represents 'boys';

'Triangle' represents 'married',

'Square' represents 'the persons who own pets'

select the are which represents boys who are married but do not own pets

The logic followed here is :

circle = boys

Triangle = married

clearly 4  lies in the  circle and triangle but not rectangle  that represents boys who are married but do not own pets