
Given below are two premises and four conclusions drawn from those premises. Select the code that expresses conclusion drawn validly from the premises (separately or jointly).
Premises :
. All dogs are mammals.
. No cats are dogs.
Conclusions :
. No cats are mammals.
. Some cats are mammals.
. No dogs are cats.
. No dogs are non-mammals.


Important Questions on Logical Reasoning
Statements
Some shirts are pants.
All pants are caps.
All caps are ties.
No tie is socks.
Conclusions
I. No cap is socks.
II. Some pants are shirts.
III. All caps are pants.

Some statements are given followed by some conclusions. You have to consider the statements to be true even, if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follow from the given statements.
Statements
1. Some doctors are lawyers.
2. All teachers are lawyers.
3. Some engineers are lawyers.
4. All engineers are businessmen.
Conclusions
I. Some teachers are doctors.
II. Some businessmen are lawyers.
III. Some businessmen are teachers.
IV. Some lawyers are teachers.

Premises :
(A) Most of the dancers are physically fit.
(B) Most of the singers are dancers.
Conclusions :
(a) Most of the singers are physically fit.
(b) Most of the dancers are singers.
(c) Most of the physically fit persons are dancers.
(d) Most of the physically fit persons are singers.

Premises:
(a) Untouchability is a curse.
(b) All hot pans are untouchable.
Conclusions:
(i) All hot pans are a curse.
(ii) Some untouchable things are hot pans.
(iii) All curses are untouchability.
(iv) Some curses are untouchability.

From those two premises, four conclusions (i), (ii), (iii) and (iv) are drawn. Select the code that states the conclusion/conclusions drawn validly (taking the premises singularly or jointly).
Premises | Conclusions |
(a) All bats are mammals. | (i) No birds are mammals. |
(b) No birds are bats. | (ii) Some birds are not mammals. |
(iii) No bats are birds. | |
(iv) All mammals are bats. |

Statements
All boxes are foxes.
All foxes are schools.
No school is college.
All colleges are markets.
Conclusions
I. No fox is college.
II. No college is school.
III. No box is fox.

Statements
Some leaves are flowers.
No flower is fruit.
Some fruits are branches.
Some branches are stems.
Conclusions
I. Some leaves are stems.
II. All leaves are either stems or fruits.
III. All stems are either branches or fruits.

Statements
Some caps are umbrellas.
Some umbrellas are raincoats.
All raincoats are trousers.
All trousers are jackets.
Conclusions
I. Some raincoats are caps.
II. Some trousers are umbrellas.
III. All raincoats are jackets.
