FIVE QUESTIONS IN A BANK EXAM
For such questions, you can take the help of Venn Diagrams. On the basis of the given statements, you should draw all the possible diagrams, and then derive the solution from each of these diagrams separately. Finally, the answer common to the all the diagrams is taken.
For such questions, you can take the help of Venn Diagrams. On the basis of the given statements, you should draw all the possible diagrams, and then derive the solution from each of these diagrams separately. Finally, the answer common to the all the diagrams is taken.
Example
1:
Statement:
All
dogs are asses.
All
assess are bulls.
Conclusions:
Some
dogs are not bulls.
Some
bulls are dogs.
All
bulls are dogs.
All
dogs are bulls.
Solution:
On
the basis of both statements, the following one diagram is possible.
From
the diagram it is clear that (2) and (4) conclusions logically
follow.
Example
2:
Statements:
Some
dogs are asses.
Some
asses are bulls.
Conclusions:
Some
asses are not dogs.
Some
dogs are bulls.
Solution:
From
these given statements the following diagrams are possible:
From
the diagram neither (1) nor (2) conclusions follow. There
are some logical rules also to solve these problems.
statements
are given. The statements are known as premises. Premise consists
of SUBJECT
and
PREDICATE.
Premise
starts with
ALL
NO
SOME
SOME
NOT
Derivation
of answers:
-----------------------------------------------------------
Affirmative Negative
-----------------------------------------------------------
Universal
All No
Particular
Some Some not Many
Many not
Middle
term:
The word that occurs in both the premises is middle term.
Rules
for solving deductions (Syllogisms)
Every
deduction should contain exactly three terms
The
middle term (term present in both the premises) must be distributed
at least once
If
one of the premises is negative, the conclusion must be negative
(will have word no or
not)
If
one of the premises is particular, the conclusion must be particular
(will have word some,
few,
many etc.)
If
both the premises are particular, no conclusion can be drawn from the
given premises
If
both the premises are negative, no conclusion can be drawn from the
given premises
A
term that is not distributed in the premises can’t be distributed
in the conclusion
