CBSE Class 11-science Answered

Hi Partha,

The basic unit involved in reasoning is mathematical statement.

A sentence is called a mathematically acceptable statement if it is either true or false but not both. A sentence which is both true and false simultaneously is called a paradox.

Sentences which involve tomorrow, yesterday, here, there etc i.e variables etc are not statements.

The sentence expresses a request, a command or is simply a question are not statements.

The denial of a statement is called the negation of the statement.

Two or more statements joined by words like “and”  “or” are called Compound statements. Each statement is called a component statement.  “and”  “or” are  connecting words.