Question # 1

For two events A and B if P(A) = P (A/B) = 1/4 and P(B/A) = 1/2, then

Choose an answer

A is sub-event of B

A and B are mutually exclusive

A and B are independent and P(A/B) = 3/4

None of these

x = 1 is in the solution of the inequality

Choose an answer

x + 1 > 0

x - 2 > 0

3x - 1 < 0

x + 2 < 0

Choose an answer

The set {{a,b}} is

Choose an answer

Infinite set

Singleton set

Two points set

None

The value of x and y when (x + iy)2 = 5 - 4i

Choose an answer

x = 2, y = -1

x = -2, y = 1

x = 2, y = -i

x = 2, y = 2

Choose an answer

A bag contains 7 whit, 5 black and 4 rd balls. If two balls are drawn at random from the bag, the probability that they are not of the same color is

Choose an answer

73 / 120

83 / 120

67 / 120

43 / 120

Roots of the equation x²+ 2x + 3 = 0 are

Choose an answer

Real and equal

Real and distinct

Complex

None of these

The unit vector along z-axis is

Choose an answer

none of these

A subset of set of complex number whose elements are of the form (a,0) is called

Choose an answer

Real number

Complex number

Rational number

Irrational number

Choose an answer

0

1

2

none of these

In how many ways can 5 persons be seated at a round table

Choose an answer

5!

4!

3!

120

Choose an answer

1

3

2-i

-1

Choose an answer

0

1

2

3

cotθ= sin 2θifθ=

Choose an answer

If five triangles are constructed having sides of the lengths indicated below, the triangle that will NOT be a right triangle is

Choose an answer

8, 15, 17

3, 4, 5

12, 15, 18

5, 12, 13

f(x) = ax + b will be a constant function if

Choose an answer

a = 1 , b = 1

a = 1 , b = 0

The only function which is both even and odd is

Choose an answer

f(x) =α

f(x) = x

f(x) =0

Both A & B

1/2,1/3,1/4,1/5.........is

Choose an answer

a geometric sec

an arithmetric series

finite sequence

an infinite sequece

cosθ/2=

Choose an answer

The number of permutation that can be formed from the letters of the word OBJECT is

Choose an answer

700

600

720

620

Choose an answer

y + 1 = Ae^x

y + 1 = Axe^x

xe^x= C

y + xe^x= C

The set of complex numbers forms a group under the binary operation of

Choose an answer

Addition

Multiplication

Division

Subtraction

The domain of the principle sine function is

Choose an answer

The symbol of irrational is

Choose an answer

W

N

Q

Q'

Choose an answer

e^x+ c

e^-x+ c

x e^x+ c

not possible

The equation |x +4| = x has solution

Choose an answer

x = -2

x = 2

x = -4

x = 4

The eccentricity of parabola is:

Choose an answer

1

0

Greater than 1

Less than 1

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