5Dec19 SS Q8

8If two propositions are related in such a way that they cannot both be true together, although both may be false together, then such a relation is considered to be

Option : A
Explanation :
Refer to the Square of opposition shown below:

Propositions are contradictory when the truth of one implies the falsity of the other, and conversely.
Propositions are contrary when they cannot both be true; hot both can be false. Propositions are subcontrary when it is impossible for both to be false; but both can be true.
Two propositions are said to stand-in the relation of subaltematio1l when the truth of the first (the superaltern) implies the truth of the second the subaltern), hot not conversely.

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