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ECAT Pre General Science Mathematics Online Test MCQs With Answers
Question # 1
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0
-1
1
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Question # 2
The set {1, -1, 1, -1}, form a group under
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Addition
Multiplication
Subtraction
None
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Question # 3
If a = [1,4,3] and B= [2,-1,5] athen the mid point M of AB is:
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[1,1,1.5]
[2,2,1.5]
[1.5,1.5,4]
None of these
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Question # 4
Matrices A = [aij] 2 x 3 and B = [bij] 3 x 2 are suitable for
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BA
A2
AB
B2
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Question # 5
Two circles are said to be concentric if they have
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same radius
same chord
same centre
same diameter
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Question # 6
If n is add the expansion (a + x)
n
has middle terms
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2
3
4
5
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Question # 7
If cos (2 sin-1 x) = 1/9 , then what is the value of x?
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1/3
-2/3
2/3
2/3 , -2/3
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Question # 8
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-1
1
2
-2
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Question # 9
Fundamental law is
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Question # 10
The range of y = sin x is ______
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[1, -1]
[-1, 1]
[0, -1]
[-
∞
+
∞
]
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Question # 11
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Question # 12
The number of real tangents that can be drawn to the ellipse 3x
2
+ 5y
2
= 32 passing thro. (3, 5) is
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0
1
2
Infinite
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Question # 13
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(a + b)c = ac + bc
a + b = b + a
(a + b) + c = a + (b + c)
a(b +c) = ab + ac
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Question # 14
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0
1
2
1/2
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Question # 15
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Question # 16
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No solution
One real solution
More than one real solution
None of these
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Question # 17
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2
0
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Question # 18
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Question # 19
The graph of the quadratic equation is
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Straight line
Circle
Parabola
elipse
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Question # 20
If for two events A and B , P(A∪B)=1,then events A and B are
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Certain events
Mutually exclusive
Complementary events
Independent
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Question # 21
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Question # 22
5x
3
+ 3x - is a ______
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Polynomial of degree 3
Polynomial of degree 2
Polynomial of degree 1
Polynomial of degree 0
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Question # 23
Three right angles is the angle of measure
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270°
180°
90°
270'
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Question # 24
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Only one real solution
Exactly three real solution
Exactly one rational solution
Non-real roots
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Question # 25
If A and B are skew-symmetric then (AB)t is
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At Bt
AB
-AB
BA
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Question # 26
Every subset of a finite set is
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Disjoint
Null
Finite
Infinite
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Question # 27
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5
15
10
20
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Question # 28
If a
1
, r are first term and the common ratio respectively then the sum of an infinite geometric series is
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Question # 29
The A.M. of two numbers is 34 and G.M. is 16, the numbers are
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2 and 64
64 and 3
64 and 4
None of these
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Question # 30
The set {1,-1, i, -i} form a group under
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Addition
Multiplication
Subtraction
None
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Question # 31
The set of integer is
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Finite group
A group w.r.t addition
A group w.r.t multiplication
Not a group
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