Question # 1

N∪ W = ....................

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∅

{∅}

N

W

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

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 number of elements in power set {1,2,3}:

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4

6

8

9

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⋃(B⋂C) = ___________________

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(A⋃B) ⋂ (A⋃C)

A⋂ (B⋂C)

(A⋂ B)⋃ (A⋂C)

A⋃ (B⋃ 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∪ A^c=..............

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∪

A

A^c

∅

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

Sum of the deviations of values x from its mean is always ''i.e ∑(x-x̅)’is to equal:

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itself

zero

median

mode

The geometric mean of the a observations 2,4,8, is:

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2

8

4

no geometric mean

The number of element in power set {1.2.3} is.

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4

8

6

9

Point (-1,4) lies in quadrant:

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I

II

III

IV

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

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