compound statements and truth table

Truth Tables - A table is indicating the truth values of one or more statements is called a truth table..

Truth value is the truthfulness of statement. If a statement is true its truth value is T, if a statement is false then its truth value is F. In the above examples, truth values are (i) F (ii) T (iii)..

Proposition or statement and Truth Value of a statement - A declarative sentence which is true or false but not both is called a propositi..

A B C 0 0 0 0 1 1 1 0 1 1 1 1 ..

If p and q are two propositions, then the compound proposition, "if p then q" is known as conditional statement or implication. It is denoted by p q. p is called the antecedent (or hypothesis). q is called the consequent (or conclusion). Note: p q can be read as (i) If p th..

Conditional and Biconditional Statements - It is already mentioned in earlier classes that compound statements of different propositions can be obtained by conjunction, disjunction and negation of propositions. We just recall these three basic logical connectivities an..

Logical Equivalence - Two propositions (simple or compound) are said to be logically equivalent if they have identical truth values. If p is logically equivalent to q, we denote p q. We have already constructed the truth table of (~p) q in earlier class. Reca..

m ). Molar volume of all gases under normal pressures (1 atm) and normal temperature (273K) have a value of 22.4 litre and contains 6.023 x 10 2 3 molecules. The number is called the Avogadro's number or Avogadro's constant and is denoted by N A . Avogadro's law is very useful in chemistry and h..

Covalent compounds are formed by the sharing of electrons by atoms of non-metallic elements between groups IVA and VIIA. The elements of these groups react with one another by sharing election pairs. Thus, the valency of an element in a covalent molecule is equal to the number of electron..