Select from the four alternative diagrams,the one that best illustrates the relationship among the three classes: pigeons,birds,dogs.

Consider the Venn diagram given below. The numbers in the Venn diagram indicate persons reading the newspapers. The diagram is drawn after surveying $50$ persons. In a population of $10,000$,how many can be expected to read at least two newspapers? Choose the correct answer from the following:

Which of the following diagrams correctly represents Elephants,Wolves,and Animals?

Out of the four figures that follow,you are to indicate which figure will best represent the relationship amongst the three classes: Authors,Teachers,Men.

$A$ survey was conducted on a sample of $1,000$ persons with reference to their knowledge of English,French,and German. The results of the survey are presented in the given Venn diagram. The ratio of the number of persons who do not know any of the three languages to those who know all the three languages is:

Which one of the following Venn diagrams best illustrates the three classes: rhombus,quadrilaterals and polygons?