Logical Venn Diagram Concept
In this chapter, we deal with questions which aim at analysing a candidates ability to relate a certain given group of items and illustrate it diagrammatically. Figures representing groups of items in the form of enclosed regions are called Venn-diagrams named after the British logician - John Venn. To represent these diagrams we use different geometrical figures like circles, these are following type :
(1) All part — Mother, Female
Logic : All mother's are female.
(2) Some part — Teacher, Male
Logic : Some teachers are male.
(3) None part — Male, Housewife
Logic : No male is housewife.
There are a position of above two word but a question have three words. There is a special relation between them. You shall be define this relation threw by answer figures.
There are given ten figures position for the three words —
(1) In this chapter we will deal with basically three entities. There are following types of question which are generally asked in various exam.
India, M.P. and Indore -
Sol. - (B)
Logic : These are geographic area. Indore is situated in M.P., and M.P. is in the India.
(2) Fruit, Grapes, Apple -
Logic - All grapes and Apples are fruit.
(3) Vegetable, Cabbage, Mango -
Logic - All cabbages are vegetables, while mango is a fruit. Hence, it shows different.
(4) Human, Female, Engineer -
Logic - Some females are engineer and all females are human.
(5) Graduate, Post graduate and Doctor -
Logic - Only graduate person may be post - graduate. While some graduate and some post graduate may be Doctor and some teachers may be - Neither graduate nor post graduate.
(6) Flower, Red, Clothes -
Logic - Some flowers are red coloured and some clothes are red coloured too.
(7) Teacher, Male, Singer -
Logic - Some males are teacher and some males are singer. Some groups may be male, teacher and singer.
(8) Sunday, Tuesday, Friday -
Logic - These are different - different days.
(9) Advocate, Male, Truck -
Logic - Some males are advocate. While there are no relation between truck and advocate or male.
(10) Haryana, Punjab, Chandigarh -
Logic - Chandigarh is the capital of Haryana and Punjab.
Example - (1) Language, Sanskrit, Science -
Sol. - (C)
Logic - Sanskrit is a language. While science is different.
Example - (2) Widow, Female, Smoker -
Sol. - (B)
Logic - Widow words is use for female. While smoking lover may be widow, women or others.
Example - (3) Tennis lover, Cricket player, Student -
Sol. - (D)
Logic - Some students are may be cricket player and tennis lover. Hence them are related to each - other.
Example - (4) Quadrilateral, Rectangle and Square -
Sol. - (D)
Logic - All rectangles and square are quadrilateral and all square are rectangle.