Question

All birds are animals All animals are four legged
Implications
a. All animals which are four legged are birds.
b. All birds are four legged
c. Some birds not are four legged
d. Some birds are animals but not four legged.
a and b
C O
bandc
only b
only d
0 None is true
None is true​

Answer 1

Answer:

a and b are implicit assumptions.

Answer 2

Answer:

the answer is some birds and animals are not four legged