Question # 1

(A∪B)∪C= --------------------------

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A∩B(B∪C)

A∪(B∪C)

A∪(B∩C)

None of these

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are real no

both are not real

are imaginary no

both are imaginary

If three unequal numbers p, q, r are in H.P. and their squares are in A.P., then the ration p : q : r is

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none of these

If line through (4,3) and (2,k) is perpendicular to y =2x +3, then k =_______

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-1

1

-4

4

A machine operates if all of its three components function. The probability that the first component fails during the year is 0.14, the second component fails is 0.10 and the third component fails is 0.05. the probability that the machine will fail during the year is

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0.2647

0.2692

0.3647

None of these

The formula an = arn-1represents

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nth term of G.P

Sum of the first n terms

G.M between a and b

None of these

A point (x,y) which satisfy a linear inequality in two variables form its

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Solution

Domain

Range

None

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An upper triangular matrix

A lower triangular matrix

A diagonal matrix

A null matrix

Period of sin x is

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cosec x + c

-cosec x + c

-sec x + c

sec x + c

An equation which hold good for all values of the variables is called

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Identity

fraction

mixed form

Partial equation

The area of sector with central angle of 1 radian in a circular region whose radius is 2m is

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0.5m2

2m2

1m2

4m2

If a +b +c =0 then which of the following is true

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a =b =c =0

a,b =b,c =c,a

a xb=b xc =c xa

None

The square root of every incomplete square is an

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Rational numbers

Even numbers

odd numbers

Irrational numbers

If n is any positive integer ,t hen 2+4+6+......+2 n=

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2ⁿ-1

2ⁿ+1

n²+1

n(n+1)

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sin x + c

-sin x + c

cos x + c

-cos x + c

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z is purely imaginary

a is any complex number

z is real

None of these

3x + 4 > 0 is

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equation

inequality

identity

none of these

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If a = {2m/2m < 9 ,m€ p} , the (n A) =

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{2,3,4,5,6,7,8}

{2,4,6,8............16}

{ 4, 6}

{2,3,5,7}

In one hour, the minute hand of a clock turns through

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π

π/6

-π/2

2π

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The law of sines

The law of tangents

The pythagorus theorem

None of these

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5th term of a G.P. is 2, then the product of first 9 terms is

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256

128

512

None of these

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sin h x

cos h x

tan h x

cot h x

A function of the form p(x)/Q(x) is called:

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Rational function

Logarithmic function

Exponential function

Hyperbolic function

The set {{a,b}} is

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Infinite set

Singleton set

Two points set

None

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