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Which of the following statements are correct? A. A proposition and E proposition are contradictories B. A proposition and O proposition are contradictories C. E proposition and O proposition are contradictories D. I proposition and O proposition are contraries E. I proposition and O proposition are subcontraies Choose the correct answer from the options given below:
Propositional logic is referred as
1. statements logic.
2. proposition which join entire proposition.
3. argument logic.
4. proposition does not join entire proposition.
Select the correct answer:
A tautology is a Boolean formula that is always true. Which of the following is a tautology?
A compound proposition that is neither a tautology nor a contradiction is called a ___________
What all forms can be anything tautology, contingent and self contradictory.
1. Proposition
2. Propositional Form
3. Statement
4. Statement Form
A compound proposition that is always ___________ is called a contradiction.
The compound propositions p and q are called logically equivalent if ________ is a tautology.
In a compound weighing 1200 gm, metals A and B are in the ratio 5 : 7 and in another compound weighing 800 gm, metals A and B are in the ratio 3 : 1. Find the difference between weight of metal A and metal B in the third compound which is the mixture of compound 1 and compound 2.
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R  Assertion A: A proposition is a statement about observable phenomena (concepts) that may be judged as true or false.  Reason R: When a proposition is formulated for empirical testing, it is called a hypothesis.  In light of the above statements, choose the most appropriate answer from the options given below 
Given below is a proposition: Mahatma Gandhi is called father of Nation. What kind of classical categorical proposition is it?