Question # 1

The set {-1,1} is

Choose an answer

Group under the multiplication

Group under addition

Does not form a group

Contains no identity element

Let A,B, and C be any sets such that A∪B = A∪C and A∩B = A∩C then

Choose an answer

A≠ C

B = C

A = B

A≠ B

The smallest positive root of the equation tan x - x = 0 lies on

Choose an answer

n! > 2ⁿ-1 is true when

Choose an answer

n≤ 3

n≤ 6

n≥ 4

n≤ 6

If a > 0 they parabola y2 =-4ax lies in

Choose an answer

I and iv quadrant

I quadrant

II and III quadrant

All are incorrect

The maximum value of the quadratic function f(x) = 2x2-4x+7,is

Choose an answer

3

5

-3

-5

Choose an answer

none of these

Given X,Y are any two sets such that number of elements in set X = 28, number of elements in set Y = 28, and number of elements in set X∪Y = 54, then number of elements in set X ∩ Y =

Choose an answer

4

3

2

1

In R the number of identity element w.r.t '+' is

Choose an answer

One

Two

Three

Four

A line segment whose end points lie on a circle is called

Choose an answer

the secant of the circle

the arc of the circle

the chord of the circle

the circumference of the circle

Choose an answer

100x ⁹⁹

100x ¹⁰¹

-99x ⁹⁹

-100x ¹⁰¹

Choose an answer

28 / 81

28 / 243

81 / 28

243 / 82

Matrices are represented by

Choose an answer

Natural numbers

Real numbers

Small letters

Capital letters

Given two independent event A and B such that P(A) = 0.30 and P(B) = 0.60. Probability of getting neither A nor B is

Choose an answer

0.28

0.13

0.12

0.42

Choose an answer

π/ 2

π/ 3

π/ 4

π

(a-1)-1 =

Choose an answer

a-1

a

-a

None of above

Choose an answer

The law of sines

The law of tangents

The pythagorus theorem

None of these

Choose an answer

The domain of the function x/x² -4 is given by

Choose an answer

R

R + 2

[R - (+2)

R-4

Choose an answer

In(x²- x + 1) + c

In(2x - 1) + c

One degree is denoted by

Choose an answer

1⁰

1'

1"

1 rad

Choose an answer

Even

Odd

Prime

None of these

A square matrix A = [aij] is upper triangular when

Choose an answer

cij = 0

bij = 0

aij = 0 for all i > j

dij = 0

Which one is not defined∀n∈Z+

Choose an answer

-n!

n!

(-n)!

n!+0!=n!+1

Choose an answer

An ellipse slides between two lines at right angles to one another. The locus of its centre is :

Choose an answer

a parabola

an ellipse

a circle

a hyperbola

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

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