Question # 1

The formula of range is:

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X_max -X_min

X_max + X_min

groups/wight

none of these

The harmonic mean of the observation 0,15,12, is:

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3.7

7.3

6.7

no harmonic mean

By definition, which of the following is a set?

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{a,b,c,d}

{1,2,3,2}

{l,m,n,o}

{0,1,2,3,1}

The different number of way to describe a set are.

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1

2

3

4

The set having only one element is called:

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Null set

Power set

Singleton set

Subset

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

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A - B

A^c

A∩ B

B^c

N∪ W = ....................

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∅

{∅}

N

W

(A∪B)∪C is equal to

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A∩ (B∪C)

(A∪B)∩C

A∪(B∪C)

A∩ (B∩C)

The relation {(1, 2),(2, 3),(3, 3),(3, 4)} is:

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Onto function

In to function

Not a function

One-one function

If A⊆ B the A⋂ B = ______

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A

B

∅

A⋃ B

The set {x/x∈W ^x≤ 101} is.

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Infinite set

Sub set

Null set

Finite set

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

The total of frequency up to an upper class limit or boundary is called:

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frequency

class frequency

cumulative frequency

relative frequency

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

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

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I

II

III

IV

Which of the following is true?

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W⊆ N

Z ⊆ W

N ⊆ P

P ⊆ W

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