Verbal Reasoning - Syllogism - Discussion

Discussion Forum : Syllogism - Syllogism 2 (Q.No. 1)
Directions to Solve
In each of the following questions two statements are given. Which are followed by four conclusions (1), (2), (3) and (4). Choose the conclusions which logically follow from the given statements.

1.

Statements: No door is dog. All the dogs are cats.

Conclusions:

  1. No door is cat.
  2. No cat is door.
  3. Some cats are dogs.
  4. All the cats are dogs.

Only (2) and (4)
Only (1) and (3)
Only (3) and (4)
Only (3)
All the four
Answer: Option
Explanation:
Discussion:
121 comments Page 4 of 13.

Vikash said:   1 decade ago
Conclusion four may be also correct if all the dogs are cat then from venn diagram it also happens that dogs completely overlap on dogs and in that case the all the cats are dogs.

Ashish said:   1 decade ago
Yes agree to all guys as there is no other possibility except the door but as in all venn diagram problems we leave the possibility scenario here also drop 3 will be correct.

Sreenath said:   8 years ago
Out of two statements, if one is negative, the conclusion must be negative.

So only 1 and 2 options may be right.
But 1 and 2 are wrong.
Hence there is no answer.

Parameswaran said:   3 years ago
Yes, it is correct @Saalini

Because 4th conclusion is not correct.

Ex- all yellow yolk is inside the egg's shell, the egg shell is not inside the yellow yolk.

Vivek Pandey said:   1 decade ago
The statement clearly says that no door is dog but it didn't specify that no cat is door. So here door can be cat or cat can be door. So only 3 follows.

Monika said:   1 decade ago
First option: no door is a cat.

It means no door is a cat nor no cat is a door, and this is correct. So why not option 1 and 2 along with option 3?

Rajesh said:   1 decade ago
According rule set if one premise is negative then conclusion must be negative,and also common term should be eliminated so option (1) is correct.

Deepali said:   1 decade ago
Hey we have to make a definite diagram and a probable diagram and if in both the diagrams it follows then only we can approve for it ?

Himanshi said:   9 years ago
Answer should be 1, 2, 3 because in venn diagram method, out of all possibilities, we consider the one which has LEAST COMMON AREA.

Chandrakala said:   3 years ago
@All.

Here, they said no door is dog. It means we shouldn't connect the door and the dog but we can connect the door and the cat.
(3)


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