## Logical Venn Diagram

#### Logical Venn Diagram

1. Which of the following figures represents the relationship among DOG, CAT and PET?

1. According to above given question , we can say that
Dog is different from cat.
But both may be pet.
Some dogs and cats may not be pet.

##### Correct Option: D

According to above given question , we can say that
Dog is different from cat.
But both may be pet.
Some dogs and cats may not be pet.
It is clear that option ( D ) represents the best relationship between DOG, CAT and PET . As shown in given venn - diagram .

1. Which one of the following diagrams best depicts the relationship among horses, parrots and birds?

1. On the basis of above given question , we know that
Parrot is a bird. Horse is an animal.

##### Correct Option: B

On the basis of above given question , we know that
Parrot is a bird. Horse is an animal.
From above it is clear that option ( B ) represents the best relationship between horses, parrots and birds . As shown in given venn - diagram .

1. Which one of the following diagrams best depicts the relationship among Pigeons, Birds and Dogs.

1. According to above given question , we can say that
Pigeons come under the class Birds.
Dog is a mammal.

##### Correct Option: A

According to above given question , we can say that
Pigeons come under the class Birds.
Dog is a mammal.
It is clear that option ( A ) represents the best relationship between Pigeons, Birds and Dogs. As shown in given venn - diagram .

1. Identify the figure which best represents the relationship among Tables, Chairs and Furniture.

1. According to above given question , we can say that
Tables are different from chairs.
But both come under the class Furniture.

##### Correct Option: B

According to above given question , we can say that
Tables are different from chairs.
But both come under the class Furniture.
It is clear that option ( B ) represents the best relationship between Tables, Chairs and Furniture. As shown in given venn - diagram .

1. In a class, there are 80 students who study both Computer Science and Electronics. While 100 students study Computer Science, 120 students study Electronics. How many of them study Computer Science only?

1. According to above given question , we can say that
There are 100 students in Computer Science which include students of electronics too.
Numbers of students who study both Computer Science and Electronics = 80
∴ Number of students opting for Computer Science only = 100 – 80 = 20

##### Correct Option: D

According to above given question , we can say that
There are 100 students in Computer Science which include students of electronics too.
Numbers of students who study both Computer Science and Electronics = 80
∴ Number of students opting for Computer Science only = 100 – 80 = 20
Therefore , 20 students study Computer Science only .