Discussion Forum



In this type of questions, generally, a Venn diagram is given. Each geometrical figure in the dragram represents a certain class. The candidate is required to study and analyse the figure carefully and then answer the certain question regarding the given data.

1)

A result of a survey of 1000 persons with respect to their knowledge of Hindi (H), English(E) and Sanskrit (S) is given below :

362021177_ven d16.JPG

what is the ratio of those who know all the three languages, to those who do not know Sanskrit?


A) 1/9

B) 1/10

C) 10/7

D) 5/27

Answer:

Option D

Explanation:

The persons who know all the three languages are represented by the region which is common to all the three circles. So, a number of such persons = 100. The persons who do not know Sanskrit are represented by the region outside circle S. So,number of  such persons = (200 + 120 + 220) = 54O.

.'. Required ratio = 100 :, 540 = 5 : 27