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Online Tests

Mathematics ECAT Pre Engineering Online Test MCQs With Answers

Question # 1

If B ={x/x€ Z ^ - 3 < x < 6}, then n (B) =

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5

{-3,-2,-1,0,1,2,3,4,5,6}

8

9

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Question # 2

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-1

1

2

-2

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Question # 3

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Question # 4

Range of tan x is ______

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[-1, -]

R

Negative real numbers

R - {x | - 1 < x < 1}

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Question # 5

The range of the principal sine function is

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Question # 6

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Question # 7

The interval in which f(x)=x3-6x2+9x is increasing

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1<x<3

x<1 and x>3

X ≥1 and x ≤ 3

-∞ < x < ∞

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Question # 8

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A

B

A'B'

B'A

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Question # 9

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30°

45°

60°

120°

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Question # 10

Which of the following sets in infinite

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The set of students of your class

The set of all schools in Pakistan

The set of natural numbers between 3 and 10

The set of rational numbers between 3 and 10

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Question # 11

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(2x+a+b+c)

(a+b+c)

(a+b+c+x)

0

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Question # 12

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Question # 13

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Question # 14

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Question # 15

w¹⁵= ______

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0

1

w

w²

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Question # 16

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

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30°

60°

45°

90°

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Question # 17

A sequence whose reciprocal is an A.P is called

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Oscillator

H.P

G.P

None of these

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Question # 18

The number of permutations of n objects of which there are n₁like of one kind, n₂like of the second kind and n₃like objects of third kind are

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Question # 19

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none of these

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Question # 20

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both a & c

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Question # 21

2x³+ 3x + 9 is a ______

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Polynomial of degree 3

Quadratic equation

Cubic equation

Polynomial of degree 2

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Question # 22

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direction ratios

direction cosines

direction angles

none of these

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Question # 23

Period of cosec x is ______

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Question # 24

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2 x 2

2 x 3

3 x 2

3 x 3

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Question # 25

If the st. line 3x + 4y = K touches the circle x²+ y²- 10x = 0 then the value of K is

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-1 or 20

-10 or 40

-2 or 20

2 or 20

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Question # 26

A stationary point x is a relative exterma of y= f(x) is

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f′′ (x) > 0

f′′ (x) < 0

f′′ (x) ≠ 0

f′′(x) = 0

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Question # 27

The complement of set A relative to universal set U is the set

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{x / x∈ A∧ x∈ U}

{x / x∉ A∧ x ∈ U}

{x / x∈ A and x ∉ U}

A-U

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Question # 28

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x =0, y =4

x = -1, y = 2

x = 2, y = 3

x = 3, y = 4

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Question # 29

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16 / 7

6 / 17

7 / 16

None of these

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Question # 30

Any recurring decimal represents a

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Irrational no

Integer

Rational no

None of these

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Question # 31

Two positive integers whose sum is 30 and their product will be maximum are

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12,18

10,20

15,15

14,16

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