Question # 1

In proportion a:b::c:d, b and c are called:

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Means

Extremes

Third proportional

None of these

A Deviation is defined as a difference of any value of the variable from a:

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Constant

Histogram

Sum

If b²-4ac>0 and is a perfect square, then roots are:

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Rational and equal

Rationaland unequal

Irrationaland equal

Irrationaland unequal

If b²-4ac > 0, but not a perfect square then roots of ax²+bx+c=0 are:

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Imaginary

Rational

Irrational

None of these

Roots of the equation 4x²-5x+2=0 are:

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Irrational

Imaginary

Rational

None of these

Which of the following is associative law of union?

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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)

A data in the form of frequency distribution is called..............

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Grouped data

Ungrouped data

Histogram

Dispersion

In equation ax⁴+bx²+c=0, we replace:

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x² = y

x= y

x⁴= y

x³= y

The nature of the root of equation x²-5x+5=0

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Rationaland equal

Irrationaland unequal

Irrationaland equal

Rationaland unequal

A second degree equation in one variable x is of the form:

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ax²+c

ax²+bx+c

ax+bx+c

ax²+b

1/cosθ = ................

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Sinθ

Secθ

Co secθ

Cosθ

If a:b = x:y, then invertendo property is:

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Power set of an empty set is.

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∅

{a}

{∅,{a}}

{∅}

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if A∩ b =∅, then set A and B are .................sets.

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sub

over kaooubg

Disjoint

Power

O - E = ............

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∅

O

E

Z

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