Given below are two premises (a and b). From those two premises f
| Given below are two premises (a and b). 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:
a) All bats are mammals.
b) No birds are bats.
Conclusions:
i. No birds are mammals.
ii. Some birds are not mammals.
iii. No bats are birds.
iv. All mammals are bats.
Premises:
a) All bats are mammals.
b) No birds are bats.
Conclusions:
i. No birds are mammals.
ii. Some birds are not mammals.
iii. No bats are birds.
iv. All mammals are bats.
A. i only
B. i and ii only
C. iii only
D. iii and iv only
Please scroll down to see the correct answer and solution guide.
Right Answer is: C
SOLUTION
From (i)
From (ii) 
Among the four conclusions, only iii seem to be true because:
• From the above figures, no relation can be drawn between birds and mammals. Therefore, option1 and 2 are false.
• Option 4 is also false as All mammals are bats is false.
• Option 3 is true as No bats are birds can be easily concluded.
