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ECAT Mathematics Online Test MCQs With Answers
Question # 1
The roots of the equations will be equal if b
2
- 4ac is
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Positive
Negative
1
Zero
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Question # 2
If z
1
= (a,b), z
2
=(c,d), then z
1
z
2
= -------------------
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(ac,bd)
(ac+bd, ad-bc)
(ac-bd , ad+bc)
(ac-bd , ad-bc)
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Question # 3
Domain of sec
θ
is
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Question # 4
i =
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Question # 5
The law of sines can be used to solve oblique triangle when following information is given:
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Two angles and a side
Two sides and an angle opposite one of the given sides
Two sides and the angle between two sided
Option a and b
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Question # 6
∫
f
(x) is known as:
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Definite itegral
Indefinite integral
Fixed integral
Multiple integral
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Question # 7
A function f(x) is said to be the periodic function if for all x in the domain of f, there exists a smallest positive number p such the f(x + p) = ______
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f(p)
f(x)
f(o)
None of these
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Question # 8
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sec 5x + c
- sec 5x + c
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Question # 9
A line joining two distinct points on a parabola is called a ______ of the parabola.
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Chord
Tangent
Lust rectum
directrix
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Question # 10
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Question # 11
If A and B are two disjoint events then
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P(A∪B)=P(A)+P(B)
P(A∪B)=P(A)-P(A∪B)
P(A∪B)=P(A)or P(B)
None
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Question # 12
A function from X to Y is written as
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f : X to Y
f : Y to Y
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Question # 13
In an A.P,a +(n-a)d is
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1st term
General term
Last term
None of these
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Question # 14
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Question # 15
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A
2
- 5A + 7I = 1
2A
2
- 3A + 7I = 0
A
2
- 5A + I = 0
A
2
- 5A + 7I = 0
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Question # 16
The sample space for tossing a coin once is
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{T, T}
{H, H}
{H, T}
None of these
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Question # 17
6 is
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A prime integar
An irrational number
A rational number
An odd integer
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Question # 18
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Question # 19
x
4
- 3x
3
+ 3x + 1 = 0 is called ______
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Reciprocal equation
Exponential equation
Radical equation
None of these
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Question # 20
cot
θ
= sin 2
θ
if
θ
=
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Question # 21
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Question # 22
If #n = (n-5)
2
+ 5, then find #3 x #4.
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54
12
4
9
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Question # 23
If A∩B=B, then n(A∩B) is equal to
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n(a)
n(a)+n(c)
n(c)
None of these
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Question # 24
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30°
45°
60°
90°
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Question # 25
A square matrix A for which A
t
= A is called a
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Column matrix
Symmetric matrix
Skew-symmetric matrix
Row matrix
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Question # 26
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Question # 27
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16 / 7
6 / 17
7 / 16
None of these
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Question # 28
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1
0
3
-1
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Question # 29
The point (x
1
, y
1
) lies outside the circle x
2
+ y
2
+ 2gx + 2fy + c =0 if
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Question # 30
i
3
=
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-1
i
-i
1
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Question # 31
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