Question # 1

Cofactor of an element aij denoted by Aij is

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(-2)i+j

Mij

(-1)i+j Mij

None of above

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quadratic function

constant function

linear function

exponential function

The obtuse angle between lines = -2 and y = x +2 is

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120°

135°

150°

140°

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none of these

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none of these

The angle between the vectors 3i + j - k and 2i - j + k is

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If A = {2m/m³= 8 , m€ Z} then A =

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{1,8,27}

{4}

(2,4,6}

{2,16,54}

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A finite set

An infinite set

An empty set

None of these

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1

2

3

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none of these

Which is the proper rational function

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The solution set of the inequality ax + by < c is

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straight line

half plane

parabola

none of these

The set of points {(x,y)|y = f(x),∀x∈} is called

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Relation

Graph of f

Function

All are correct

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3

1

2

4

Through how many radians does the minute hand of a clock turn in one hour

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If the distance of any point on the curve from any of the two lines approaches zero then it is called

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Axis

Directrices

Asymptotes

None

The conjugate of √5 i is

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√5

-√5 i

i

5i

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The minimum value of the quadratic function f(x) = x2 +6x -2, is

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11

6

-11

13

For all points (x,y) in fourth quadrant

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x > 0 , y < 0

x > 0 , y > 0

x < 0 , y < 0

x < 0 , y > 0

G = {e, a, b, c} is an Abelian group with e as identity element. The order of the other elements are

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2, 2, 2

3, 3, 3

2, 2, 4

2, 3, 4

The square root of 2i - 20i is

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+-(5 - 2i)

+-(5 + 2i)

(5 - 2i)

None of these

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Both the roots of the equation (x -b) (x - c ) + (x -c) (x-a) +(x-a) (x-b) = 0 are always

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Positive

Negative

Real

None of these

Out of 10, 000 families with 4 children each, the number of families all of whose children are daughters is

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375

500

625

150

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If A, G, H are the arithmetic, geometric and harmonic means between a and b respectively then A, G, H are in

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A. P.

G. P.

H. P.

None of these

If the exponent in the binomial expansion is 6, then the middle term is

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2nd term

3rd term

4th term

5th term

probability of a certain event is

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0

-1

1

∞

cot(3π/2 -θ)=______;

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tanθ

cotθ

-tanθ

-cotθ

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