Syllogism Tricks to Solve Reverse Syllogism Questions – New Pattern

 

What is Reverse Syllogism?

Reverse Syllogism means Conclusions will be given and you have to find out which statements follow these conclusions.

Tricks to be Remembered Before Solving Reverse Syllogism

The best way to approach Reverse syllogism is elimination method. Before eliminating an option we must take note on the golden rules. Before moving to rules we must know the basic terms used in solving reverse syllogism.

What are Positive Terms?

Positive terms are nothing but All and Some were the positive terms.

What are Negative Terms?

Negative terms are nothing but No and Some Not were the negative terms.

What are Universal Positive statements?

When all the statements were positive in an option, then it is called Universal positive.

What are Universal Negative statements?

When all the statements were negative in an option, then it is called Universal negative.

Syllogism Tricks – Reverse Syllogism

RULE 1:

Positive Statements
All + All
All + Some
Some + All

Negative Statements:
No + All
Some + No
All + Some Not
Some + Some Not

RULE 2:

Positive statement + Positive statement = Positive conclusion
Negative statement + Negative statement = No conclusion
Positive statement + Negative statement = Negative Conclusion

RULE 3:

Eliminate the Universal Negative Statement. As Negative + Negative gives you no conclusion.
Eliminate the Universal Positive Statement based upon given conclusion

EXAMPLE 1:

CONCLUSIONS:
(i) Some books are pen.
(ii) Some pencils are books.

STATEMENTS:
A) All books are paper. Some papers are pencil. No pencil is pen.
B) All books are paper. No paper is pencil. All pencil is pen
C) Some books are paper. All papers are pencil. No pencil is pen.

1. D) Some books are paper. All papers are pencil. All pencil is pen.

EXPLANATION:

In this example elements in both the conclusions were positive so the statements must be Universal positive statement with the same elements.

In Option A, there is a negative statement. So, it’s eliminated.

In Option B, there is a negative statement. So, it’s eliminated.

In Option C, there is a negative statement. So, it’s eliminated.

In Option D, All the statements were positive with same elements as in conclusion.

So, Option D follows.

EXAMPLE 2:

CONCLUSIONS:
(i) Some bats are not dogs.
(ii) Some bats are cats.

STATEMENTS:
A) All dogs are cats. Some cats are bats. Some bats are rats.
B) Some dogs are cats. Some cats are bats. All bats are rat.
C) No dog is a cat. All cats are bat. Some bats are rats.
D) All dogs are cats. Some cats are bats. Some bats are rats.

EXPLANATION:

In this example there is both positive and negative element in conclusion. So, the statement must also contain positive and negative statements.

In Option A, it is a Universal positive statement. So, it’s eliminated.

In Option B, it is a Universal positive statement. So, it’s eliminated.

In Option C, there is both negative and positive statement. So, Option C follows.

In Option D, it is a Universal positive statement. So, it’s eliminated.