Question # 1

Every prime number is also

Choose an answer

Rational number

Even number

Irrational number

Multiple of two numbers

cos2a=______;

Choose an answer

cos2 a-sin2 a

2cos2 a-1

1-2 sin2 a

All of these

3/4 is ______

Choose an answer

An odd number

An even number

A natural number

A rational number

The mid point of the line segment joining the points (3,-1) and (-3,1) is

Choose an answer

(3,-1)

(0,0)

(2,2)

(4,4)

Which of the following is a quadrantal angle

Choose an answer

30°

45°

60°

90°

Choose an answer

The product of the four fourth roots of unity is

Choose an answer

0

1

-1

None of these

Six boys and 3 girls are to be seated at random, in a row, for a photograph. The probability that no two girls will sit together is

Choose an answer

1/12

1/6

5/12

7/12

The harmonic mean between a and b is

Choose an answer

The domain of the principle cos function is

Choose an answer

a sec(ax + b) + c

- a sec(ax + b) + c

f(x) = sin x is:

Choose an answer

an odd function

an even function

an implicit function

an exponential function

Choose an answer

If a plane passes through the vertex of a cone then the intersection is

Choose an answer

an ellipse

a hyperbola

a point circle

a parabola

A card is drawn from a pack of cards numbered 2 to 53. the probability that the number on the card is prime number less than 20 is

Choose an answer

2 / 13

4 / 13

5 / 13

8 / 13

A∪(A∪B)= --------------------

Choose an answer

B

A

A∪B

None of these

The range of the principal sine function is

Choose an answer

The period of|sin⁡2x| is

Choose an answer

π/2

-π/2

π

π/3

The exact value of cos^-1 (-1) + cos^-1(1) =

Choose an answer

π

-π

π/2

π/3

Choose an answer

0

1

Choose an answer

6x - 2 + c

x³- x²+ x + c

6x - x²+ c

6x³- x²+ c

The exterior angle of the interior angle C of he quadrilateral whose vertices are A(5,2),B(-2,3),C(-3,-4),D(4,-5) is

Choose an answer

30°

60°

45°

90°

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

Choose an answer

If for the matrix A, A⁵= I, then A^-1=

Choose an answer

A²

A³

A

None of above

The period of the function csc x/4 us

Choose an answer

4x

π/4

8π

π/8

(0,1) is in the solution of the inequality

Choose an answer

3x + 2y > 8

2x - 3y < 4

2x + 3y > 5

x -2y < -5

Choose an answer

A square matrix all of whose elements except the main diagonal are zeros is called a

Choose an answer

Null matrix

Singular matrix

Symmetric matrix

Diagonal matrix

√25 is a number

Choose an answer

Rational

Irrational

Natural

Odd

Three integers are chosen at random from the first 20 integers. Then probability that their product is even, is

Choose an answer

2 / 19

3 / 29

17 / 19

4 / 19

The set of all positive even integers is

Choose an answer

Not a group

A group w.r.t subtraction

A group w.r.t division

A group w.r.t multiplication

More Classes

Other Links

Mathematics ECAT Pre Engineering Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer