Question # 1

We also the system of non-homogeneous linear equations by

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a and b

b and c

c and a

a, b and c

The transport of a null matrix is

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Row matrix

Column matrix

Square matrix

Null matrix

A chimney is such that on walking towards it 50 m in a horizontal line through its base the angular elevation of its top changes from 30° to 45°. The height of the chimney is

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x³- x²+ x + c

6x - 2 + c

x³- 2x + c

To each element of a group there corresponds ______ inverse element

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Two

One

No

Three

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16

256

64

1024

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Singular

Non-singular

Adjoint

None of above

If Z₁= 1 + i, Z₂= 2+3i, then |Z₂- Z₁| = ?

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The condition for polynomial equation ax2 + bx + c = 0 to be quadratic is

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a > 0

a < 0

a≠ 0

a≠ 0,b ≠ 0

Five engineering, four mathematics, two chemistry books are placed on a table at random.The probability that the books of each kind are all together is

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One minute is denoted by

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1⁰

1'

1"

None of these

Geometrically the modulus of a complex number represents its distance from the

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Point (1,0)

Point (0,1)

Point (1,1)

Point (0,0)

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Improper rational fraction

Proper rational fraction

Polynomial

Equation

Find the geometric mean between 4 and 16

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Tan 180° = ______

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-1

0

1

Undefined

sin^-1[-1/2] = ______

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The behavior of trigonometric function is called

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Continuity

Discontinuity

Periodicity

Smoothness

A function which is to be maximized or minimized is called an

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Explicit function

Implicit function

Objective function

None

Order (or sense) of an inequality is changed by multiplying or dividing its each side by a:

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Zero

one

negative constant

Non negative constant

x = ________ is in the solution of 2x + 3 > 0

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1

-2

-3

-4

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If f(x) = x²then f(0) is

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0

1

2

none of these

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If b₁, b₂, b₃, ... are in G.P. with first term unity and common ratio r, then the minimum value of b₁- b₃+ b₅is equal to

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3/4

1/4

1

None of these

The domain of the principle cos function is

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Multiplicative inverse of "1" is

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0

±1

1

{0,1}

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none of these

The angles of elevation of the top of a tower at the top and the foot of a pole of height 10 m are 30° and 60° respectively. The height of the tower is

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10 m

15 m

20 m

None of these

Find the sum of the infinite geometric series 2 + 1 + 0.5 + ....

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3.5

3

4

None of these

3/2 is

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An irrational number

Whole number

A positive integer

A rational number

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