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Mathematics ECAT Pre Engineering Online Test MCQs With Answers
Question # 1
The measure of the angle subtended at the centre of the circle by an arc, whose length is equal to the radius of the circle is
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1
0
1'
1"
1 rad
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Question # 2
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2
0
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Question # 3
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Question # 4
In (x +iy) y is called as
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Imaginary part
Complex number
Real part
None of above
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Question # 5
The factorial of a positive integers is a (an)
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Rational number
Positive integer
Real number
None
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Question # 6
The set { {a,b} } is
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Infinite set
Singleton set
Two points set
Empty set
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Question # 7
The matrix A = [aij]mxn with m≠n is
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Rectangular
Symmetric
Square
None
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Question # 8
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1/3
1
3
None of these
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Question # 9
There are two middle terms in the expansion of (a+x)n if n is
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Even +ve integer
+ve integer
Odd +ve integer
All
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Question # 10
The latus rectum of the ellipse 5x
2
+ 9y
2
= 45 is
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10 / 3
5 / 3
3 / 5
3 / 10
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Question # 11
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Question # 12
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cosec x + c
-cosec x + c
-sec x + c
sec x + c
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Question # 13
The distance between the points A(-8,3) and B(2,-1) is
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116
none of these
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Question # 14
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Question # 15
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A positive integer
A negative integer
A natural number
An irrational number
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Question # 16
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Question # 17
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n
C
r
n+1
C
r+1
n
C
r+1
None
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Question # 18
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Question # 19
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5
-5
none
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Question # 20
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
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0.28
0.13
0.12
0.42
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Question # 21
The multiplicative inverse of -1 in the set {1-,1} is
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1
-1
±1
0
Does not exist
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Question # 22
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A
0
Unit vector
None
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Question # 23
A line joining two distinct points on a parabola is called
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Axis
Directrix
Chord
Tangent
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Question # 24
The range of the principle cos function is
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Question # 25
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Question # 26
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3/4
-3/4
4/3
-4/3
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Question # 27
The square matrix A is skew-symmetric when At=
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-B
-C
-A
-D
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Question # 28
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both a & c
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Question # 29
Three integers are chosen at random from the first 20 integers. Then probability that their product is even, is
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2 / 19
3 / 29
17 / 19
4 / 19
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Question # 30
The roots of (x - a)(x - b) = ab x2 are always
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Real
Depends upon a
Depends upon b
Depends upon a and b
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Question # 31
Cos 0° = ______
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-1
0
1
Undefined
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