STATEMENTS - CLASS X

Class: X                                                                                      Subject: Maths                                                                                            Marks:25  STATEMENTS Section – I   Answer the following:                                                                            5 x 3 = 15   S. T. p Ú (q Ù r) ≡ (p Ú q) Ù (p Ú r). S. T. ~ (p Þ q) ≡ pÙ (~ q). Define biconditional and write its truth table.   Section – II                                           Answer the following:                                                                            5 x 2 = 10   Write the converse, inverse, and contra positive of the statement:  "if in a triangle ABC, AB = AC then î B = îC." Write the truth table for disjunction of 2 statements? What are equivalent statements? Simplify using algebra of statements ~ (p Ú ~q) (a) Denial of the statement is called _______. (b) Symbol for conditional is _______. (c) The truth nessor falsity of a statement is called _______ (d) In p => q, p is called _______ and q is called _______.

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