Question # 1

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

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A

A^c

U^c

∅

(A∪B)∪C is equal to

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A∩ (B∪C)

(A∪B)∩C

A∪(B∪C)

A∩ (B∩C)

The date presented in the form of frequency distribution is called:

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distribution

grouped data

range data

regrouped data

A collection of well-defined distinct objects is called.

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subset

Power set

Set

None of these

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 A has two elements and B has 3 elements, then number of binary relations in A x B is __________

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2 x 3

2³

2⁶

2²

Number of elements in power set of {1,2,3}

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4

6

8

9

O∩ E = ....................

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∅

O

E

Z

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.

Point (-1, 4) lies in the quadrant:

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I

II

III

IV

Formula to determine the size of a class is:

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X_max - X_min

X_max + X_min

Range/number of groups

number of groups/Range

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

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A - B

A^c

A∩ B

B^c

If f: A→ B and range of f= B , then f is an..............

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into function

onto function

bijective function

function

The formula of group data of the median is:

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l + h/f (n/2 -c)

l +∑fx/∑f x n,

l + f_m- f₁/2f_m - f₁ - f₂ x n,

A + ∑fu/∑f x n

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)

If B={1,2,100} and C = {2,100}, then B∩C = ________

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{1,2}

{1,2,100}

{2}

{2,1}

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