Question # 1

The complement of∪ is................

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∪

∅

impossible

Union

If A⊆ B then A⋃ B = __________

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A

B

∅

None of these

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

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A - B

A^c

A∩ B

B^c

A∩ A^c= ...........................

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∪

A^c

∅

A

Power set of empty set.

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∅

{a}

{∅,{a}}

{∅}

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 number of elements of the power set {a,b} are.

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1

2

3

4

The measures that are used to determine the degree or extent of variation in a data set are called:

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central value

A.M

measures of dispersion

median

The domain of {(a,b),(b,c),(c,d)} is............

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{a,b,c}

{b,c,d}

{a,b}

{a,b,c,d}

If two sets have some elements common but not all are called......... sets

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Sub

OVERLAPPING

Disjoint

Super

Formula of variance is group data is:

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the set {0,±1,±2,±3,........} is:

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Set of natural numbers

Set of whole numbers

Set of prime numbers

Set of integers

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

If A is subset of U, then (A^c)^c= .........

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A

A^c

U^c

∅

If f is a function from A to B, then f is onto 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.

A histogram is g group/ set of adjacent:

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squares

circles

rectangle

cube

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