Question # 1

Which of the following is associative law of Intersection?

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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)

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}

N∩ W = ..................

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∅

{∅}

N

W

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

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A∪ B

A∩ B

A - B

B - A

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

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Universal

Overlapping

Disjoint

Super

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}

The set having only one element is called.

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Null set

Power set

Singleton set

Subset

The formula of grouped data of the arithmetic mean is:

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X̅ = ∑X/n

X̅ = A + ∑fX/∑X

X̅ = ∑fX/n

X̅ = l +n/f (n/2 - c)

The complement of∅ is...........

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∪

∅

Impossible

Union

if A and B are disjoint sets , then A∪ B is equal to.

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A

B

∅

B∪ A

If variance is equal to 36 then the standard deviation will be:

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36

6

-6

none of these

Formula of variance is group data is:

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A∩ A^c= ...........................

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∪

A^c

∅

A

If A and B are two disjoint sets then A⋃ b = ______

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A

B

∅

B⋃ A

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.

If A⊆ B and B⊆ a , then

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A = B

A≠ B

A∩ B =∅

A∪ B =∅

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