Which of the following diagrams correctly represents elephants,wolves,and animals?

$A$ 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:

Choose the Venn diagram which best illustrates the three given classes: Atmosphere,Hydrogen,Oxygen.

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

In a dinner party,both fish and meat were served. Some ate only fish and some only meat. There were some vegetarians who did not accept either. The rest accepted both fish and meat. Which one of the following logic diagrams correctly reflects the above situation?

Choose from the four diagrams given below,the one that illustrates the relationship among languages,French,and German.