The contrapositive of " If two triangles are identical, then these are similar " is
If two triangles are not similar, then these are not identical
If two triangles are not identical, then these are not similar
If two triangles are not identical, then these are similar
If two triangles are not similar, then these are identical
The sentence '2 is an even integer', is
Statement
Command
Question
Paradox
Let p ans q be two statements, then ( p q ) ~ p is
tautology
contradiction
Both (a) and (b)
None of these
Dual of ( x' y' ) ' = x Λ y is
( x' y' )' = x y
( x' Λ y ' ) ' = x y
( x' Λ y' )' = x Λ y
None of the above
( p Λ ~q)Λ ( ~ p Λ q) is
a tautology
a contradiction
tautology and contradiction
neither a tautology nor a contradiction
The negation of p Λ ( q → ~ r ) is
~ p Λ ( q Λ r)
p ( q r)
p ( q Λ r)
~ p ( q Λ r)
Let p : 7 is not greater than 4 and
q : Paris is in France be two statements.
Then, ~ ( p q ) is the statement
7 is greater than 4 or Paris is not in France
7 is greater than 4 and Paris is not in France
7 is greater than 4 and Paris is in France
7 is greater than 4 and P is not in France
The statement 'The sum of interior angles of a triangle is 180 degrees', has the truth value
T
F
T and F both
Negation of "Paris is in France and London is in England " is
Paris is in England and London is in France
Paris is not in France or London is not in England
Paris is in England or London is in France
~ ( ~ p → q) ≡
p Λ ~ q
~ p Λ q
~ p Λ ~ q
~ p ~ q
