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Online Tests
ECAT Pre General Science Mathematics Online Test MCQs With Answers
Question # 1
The exact value of cos
-1
(-1) + cos
-1
(1) =
Choose an answer
π
-π
π/2
π/3
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Question # 2
How many arrangements of the letters of the word ADDING can be made
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Question # 3
Every irrational number is
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A real number
A prime number
A natural number
An integer
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Question # 4
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 # 5
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all
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Question # 6
If f(x) = -x
3
then f(-2) is
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-2
-4
-8
8
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Question # 7
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1
-1
5
2
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Question # 8
A square matrix A = [aij] is upper triangular when
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cij = 0
bij = 0
aij = 0 for all i > j
dij = 0
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Question # 9
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Question # 10
The principal value of sin
-1
(-1/2)
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π/3
π/4
π/6
-π/6
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Question # 11
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none of these
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Question # 12
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Question # 13
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Polynomial of degree 0
Polynomial of degree 2
Quadratic equation
None of these
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Question # 14
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Evert element of A is in B
Every element of B is in A
Every element of A is in B'
Every element of A is in A
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Question # 15
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a f(x) + c
f(x) + a
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Question # 16
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Commutative law of multiplication
Closure law of multiplication
Associative law of multiplication
Multiplication identity
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Question # 17
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8
4
64
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Question # 18
22.5°=______
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Question # 19
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Question # 20
A bag contains 7 whit, 5 black and 4 rd balls. If two balls are drawn at random from the bag, the probability that they are not of the same color is
Choose an answer
73 / 120
83 / 120
67 / 120
43 / 120
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Question # 21
Graph of the question x
2
+ y
2
= 4 is
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A circle
An ellipse
A parabola
A square
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Question # 22
The graph of y> 0 is the upper - half of:
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y-axis
x-axis
1st and 4th quandrant
2nd and 3rd quadrant
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Question # 23
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a
2
b
2
c
2
4a
2
b
2
c
2
4abc
None
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Question # 24
If the 4th term in the expansion of (px + x
-1
)
m
is 2.5 for all x
∈ R, then
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Question # 25
In any triangle ABC,with usual notationαsinβ =____;
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b sinα
bsinβ
αsinα
None of these
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Question # 26
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Question # 27
If (2, 3) and (2, 5) are end points of a diameter of a circle, then the centre of the circle is
Choose an answer
(2, 4)
(4, 8)
(0, 2)
(0, -2)
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Question # 28
Choose an answer
0
1
-1
None of these
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Question # 29
If A⊆ B, and B is a finite set, then
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n (a) < n(B)
n(B)<(A)
n(A)≤ n (B)
n(A)≥ n(B)
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Question # 30
Multiplicative inverse of 0 is
Choose an answer
0
1
+-1
Does not exist
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Question # 31
Period of Tangent function is
Choose an answer
0°
-
π
π
2
π
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