Question # 1

The set of whole numbers is subset of

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The set on integers

The set of natural numbers

{1, 3, 5, 7, ....}

The set of prime numbers

The set of natural is a semi group w.r.t

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Addition

Division

Subtraction

None of these

If p and q are two statements then their biconditional 'p if q' is denoted by

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The set R is ______ w.r.t subtraction

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Not a group

A group

No conclusion drawn

Non commutative group

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The negation of a number

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a relation

a function

unary operation

binary operation

Power set of X i.e P(X)..........under the binary operation of union U

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Forms a group

Does not form a group

Has no identity element

Infinite set although X is infinite

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An empty set

Universal set

A singleton set

None of these

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4

3

2

1

The set { {a, b} } is

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Infinite set

Singleton set

Two points set

Empty set

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The graph of a linear function is

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a circle

triangle

a straight line

none of these

Onto function is also called

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Binjective function

Injective function

Surjechive function

None of these

If n(X) = 18, n(X∩Y) = 7, n(X∪ Y) = 40 then n(Y) =

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1

12

5

29

The number of subsets of a set having three elements is

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4

6

8

none of these

If C={p/p < 18, p is a prime number}, then C =

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{2,3,4,.........17}

{2,4,6,8................16}

{1,3,5,7,9,11,13,15,17}

{3,6,9,12,15}

The total number of subsets that can be formed out of the set {a, b, c} is

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1

4

8

12

If A=B, then

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A⊂B and B⊂A

A⊆B and B⊈A

A⊆B and B⊆A

None of these

If the intersection of two sets is non-empty, but either is a subset of other are called

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Disjoint sets

Over lapping

Equal sets

None of these

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A

A'

U

U'

Z is the set of integers, (z, *) is a group with a * b = a + b + 1, a, b∈G. then inverse of a is

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-a

a + 1

-2 -a

None of these

Power set of difference set N-W is

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Empty set

Infinite set

Singleton set

{0,∅}

The negation of given number is a

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Binary operation

Unary operation

Relation

None of these

The number of subsets of B = {1,2,3,4,5}

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10

32

16

5

{0} is a

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Empty set

Singleton set

Zero set

Null Set

The geometrical representation of a linear function is

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Circle

Parabola

Straight lie

None of these

If P is a proposition then its negative is denoted by

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The multiplicative inverse of -1 in the set {1-, 1} is

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1

-1

+-1

0

G = {e, a, b, c} is an Abelian group with e as identity element. The order of the other elements are

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2, 2, 2

3, 3, 3

2, 2, 4

2, 3, 4

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