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)

The following figure represents a. set of persons - the triangle represents educated persons, the rectangle represents policemen, the ellipse represents road taxpayers and the circle represents shopkeepers.

According to this figure, it follows that 


A) policemen do not pay road tax

B) shopkeepers do not pay road tax.

C) some shopkeepers are educated

D) some policemen are shopkeepers.

Answer:

Option C

Explanation:

The region common to the rectangle and ellipse denotes policemen who pay road tax. So, (a) is not true. The region common to the ellipse and circle denotes shopkeepers who pay road tax. So, (b) is not true. Since there exists a region common to the triangle and circle, it indicates that some shopkeepers are educated. So, (c) is true. The absence of any region common to the rectangle and the circle violates the fact stated in (d). So, (d) is false.