Question # 1

Coding formula of group data of the arithmetic mean is:

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X̅ = ∑fX/∑f

X̅ = ∑fD/∑f

X̅ = A + ∑fu/∑f x h

X̅ = A + ∑fu/∑f

Power set of an empty set is.

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∅

{a}

{∅,{a}}

{∅}

The domain of R = {(0, 2), (2, 3), (3, 3), (3, 4)} is:

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{0, 3, 4}

{0, 2, 3}

{0, 2, 4}

{2, 3, 4}

A⊆ B then A-b = __________

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A

B

∅

B-A

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

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A - B

A^c

A∩ B

B^c

A subset of A x A is called.................. in A.

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Set

Relation

Function

Info function.

The set {x} x∈ A and x∉ B } is.......................

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A∪ B

A∩ B

A - B

B - A

N∩ W = ..................

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∅

{∅}

N

W

If set A has all its elements common with set B then set A is called...............set.

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Sub

Overlapping

Disjoint

Super

If R ={(0,2),(2,3),(3,4)} then Dom (R) is:

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{0,3,4}

{0,2,3}

{0,2,4}

{2,3,4}

If number of elements in se A is 3 and in set B is 2, then number or binary relations in A x B is.

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3

4

7

12

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 complement of∅ is...........

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∪

∅

Impossible

Union

The different number of ways to describe a set are:

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1

2

3

4

Which of the following is De-Morgan's law?

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(A∪ B)∪ C = A∪ ( B∪ C)

(A∩B)^C= A^c∪ B^c

A∪ (B∩ C) = ( A∪ B)∩ (A∪ C)

A∩(B∪ C) = (A∩B)∪(A∩C)

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

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U^c

A^c

∅^c

A - U

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