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ECAT Mathematics Online Test MCQs With Answers
Question # 1
If a is any real number and a = a is called
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symmetric property
Trichotomy Properties
Transitive Property
Reflexive Properties
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Question # 2
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0
1
-1
undefined
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Question # 3
sin 3a = ______;
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3sin a - 4sin3a
4sin a -3 sin3 a
3 cos3 a -cosa
4cos3 a - 3cos a
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Question # 4
Range of cos x is ______
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[-1, 1]
R
Negative real numbers
R - { x | - 1 < x < 1}
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Question # 5
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none of these
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Question # 6
The square roots of negative numbers is called
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Real no
Complex no
Positive no
Negative no
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Question # 7
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360°
180°
90°
None of these
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Question # 8
What is the circular measure of the angle between the hands of a watch at 4 O'clock
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Question # 9
Derivative of x
3
w.r.t x is
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0
1
3x
2
x
3
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Question # 10
The period of the trigonometric function y = sin x cos x is
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2π
π
4π
π / 2
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Question # 11
Domain of 1+cot2θ=csc2θ is
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[0,π]
R-{x/x=nπ,n∈ z}
(-∞,+∞)
[-1,1]
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Question # 12
If circumference of circle is divided into 360 congruent parts the angle subtended by one part at the centre of circle is
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1 degree
1 second
1 minute
1 radian
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Question # 13
Which of the following is skew symmetric matrix
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Question # 14
Which one is a pair of allied angles
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(180° -
θ)
(180° -
θ,
180° +
θ)
(180° +
θ)
None of these
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Question # 15
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110
220
1320
None of these
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Question # 16
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none of these
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Question # 17
If A = [a
ij
] is (m x n) matrix, then transpose of A is of the order
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m x m
m x n
n x n
n x m
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Question # 18
In one hour, the hour hand of a clock turns through
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Question # 19
Which of the following is an identity matrix?
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none of these
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Question # 20
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Question # 21
What is the period of sin 2x/3 cos 4x=?
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π
2π
π/2
π/3
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Question # 22
The 6th term of the sequence 7,9,12,16......is
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27
32
20
19
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Question # 23
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Question # 24
Cos
-1
12/13 =
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tan
-1
3/5
cot
-1
13/12
Sec
-1
13/12
sin
-1
5/13
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Question # 25
The set of natural numbers is a subset of
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{1, 2, 3, .... 100}
The set of whole numbers
{2, 4, 6, 8, .....}
None of these
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Question # 26
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Question # 27
cos
4
θ
- sin
4
θ
=
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cos4
θ
cos2
θ
-sin
θ
sin2
θ
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Question # 28
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Question # 29
If a polynomial P(x) is divided by x - a, then the remainder is
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P(o)
P(-a)
P(a)
None of these
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Question # 30
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Question # 31
If two balls are drawn from a bag containing 3 white, 4 black and 5 red balls. Then the probability that the drawn balls are of different colours is
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1 / 66
3 / 66
19 / 66
47 / 66
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