Question 1

The contrapositive of p → q is:

Accepted Answer

~q → ~p

Answer

~p → q

Answer

~p → ~q

Answer

q → p

Question 2

The disjunction of two statements p and q is denoted by:

Accepted Answer

p V q

Answer

p ← q

Answer

p ↔ q

Answer

p → q

Question 3

If matrix A is of order mxn then A has number of elements

Accepted Answer

mxn

Answer

m

Answer

m-n

Answer

m+n

Question 4

If |A| is the determinant of a square matrix A, then |A| is:

Accepted Answer

may be non-negative or negative

Answer

modulus of A

Answer

always positive

Answer

always negative

Question 5

Identity matrix is always:

Accepted Answer

non-singular

Answer

singular

Answer

none

Answer

rectangular

Question 6

If A= {a, b, c} , B= {1, 2, 3},  f= {(a, 1), (b, 1), (c, 1)} is:

Accepted Answer

constant function

Answer

one-to-one function

Answer

onto function

Answer

identity function

Question 7

Any function f : X→Y is called onto if:

Accepted Answer

range of f = Y

Answer

X = Y

Answer

domain of f = Y

Answer

domain of f = X

Question 8

If p is true then, ~p is:

Accepted Answer

false

Answer

has no information

Answer

equivalent to p

Answer

true

Question 9

A compound statement of the form "if p then q" is called an:

Accepted Answer

implication

Answer

unknown

Answer

conclusion

Answer

hypothesis

Question 10

[0] is a:

Accepted Answer

square matrix

Answer

unit matrix

Answer

rectangular matrix

Answer

scalar matrix

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