Question # 1

The range of R = {(1, 3), (2, 2), (3, 1), (4, 4)} is:

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{1, 2, 4}

{3, 2, 4}

{1, 2, 3, 4}

{1, 3, 4}

The set having only one element is called:

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Null set

Power set

Singleton set

Subset

If x⊆ A and x∉ b, then { x } is equal to.............

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A - B

B - A

A∩ B

A^c

If f is a function from A to B, then f is one - one function if:

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Range f≠ A

Range f = B

Dom f = A

Second element of all ordered pairs contained in f is not repeated.

U' = ________________

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U

A

A'

φ

A set with no element is called:

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Subset

Empty set

Singleton set

Super set

If set has 3 and B has 2 elements then number binary relations of A x B.

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2²

2⁸

2⁶

2³

A set Q = {a/b} a, b∈ Z ^ b≠ 0} is called a set of.

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Whole numbers

Natural number

Irrational numbers

Rational numbers

The harmonic mean of the observation 0,15,12, is:

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3.7

7.3

6.7

no harmonic mean

If R= { (a,2),(b,3),(c,3) }, then Dom R = ________________

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{1,2}

{1,2,3}

{a,b,c}

{a,c}

The Range of R

={(1,3),(2,2),(3,1)(4,4)} is.

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{1,2,4}

{3,2,4}

{1,2,3,4}

{1,3,4}

Which of the following is associative law of union?

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A∪ (B ∪ C) = (A∪ B)∪ C

A∩ (B∩C)= (A∩B)∩C

A∪ (B∩ C) = ( A∪ B)∩ (A∪ C)

A∩(B∪ C) = (A∩B)∪(A∩C)

If { x|x=p/q, q≠0,p,q∈Z} then this is a _____________

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Set of even numbers

Set of rational number

Set of irraional numbers

Set of integers

A⊆ B then A-b = __________

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A

B

∅

B-A

If x∈ U and x∉ A, then {x} is equal to ....................

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U^c

A^c

∅^c

A - U

A and A^care.................................Set.

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Universal

Overlapping

Disjoint

Super

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