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ECAT Pre General Science Mathematics Online Test MCQs With Answers
Question # 1
If A, G, H are the arithmetic, geometric and harmonic means between a and b respectively then A, G, H are in
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A. P.
G. P.
H. P.
None of these
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Question # 2
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Question # 3
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The law of sines
The law of consines
The law of tangents
None of these
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Question # 4
The number of combinations of 10 different objects taken 8 objects at a time is
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90
45
55
50
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Question # 5
Which of the following is a quadrantal angle
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100°
200°
170°
270°
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Question # 6
The domain of y = cos-1 x is
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-∞ < x < ∞
-1≤ x≤ 1
x≤ -1 or x ≥ 1
None of these
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Question # 7
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Question # 8
The parabola y
2
= x is symmetric about
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x-axis
y-axis
Both x and y-axis
The line y = x
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Question # 9
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Question # 10
The number of solution of the equation tan x + sec x = 2 cos x lying in the interval [0, 2
π
] is
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0
1
2
3
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Question # 11
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Question # 12
The domain of a finite sequence is a
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Set of natural numbers
R
Subset of N
Proper subset of N
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Question # 13
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Question # 14
The square matrix A is skew-symmetric when At=
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-B
-C
-A
-D
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Question # 15
If a 1-1 correspondence can be established b/w two sets A and B, then they are called
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Equal sets
Equivalent sets
Over lapping sets
None of these
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Question # 16
A bag contains 5 white, 7 red and 5 black balls. If four balls are drawn one by one with replacement, the probability that none is white is
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(11/16)
2
(5/16)
2
(11/16)
4
(5/16)
4
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Question # 17
If p and q are two statements then their conjunction is denoted by
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Question # 18
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(1,7/3)
(1, 7/5)
(1, 11/7)
(1, 3/5)
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Question # 19
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Question # 20
The transport of a square matrix is a
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Row matrix
Column matrix
Square matrix
Null matrix
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Question # 21
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sin h x
cos h x
tan h x
cot h x
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Question # 22
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Question # 23
sin(a-90°)=______;
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sina
cosa
-sinθ
-cosa
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Question # 24
s > t then
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(s - t)
2
> (t - s)
2
(s - t)
2
< (t - s)
2
(s - t)
2
= (t - s)
2
None
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Question # 25
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A
B
A'
None of these
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Question # 26
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A,. B, C are coincident
A, B, C are collinear
Both A and B
None of these
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Question # 27
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A
-A
A
t
A
-
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Question # 28
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Question # 29
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a cosec(ax + b) + c
- a cosec(ax + b) + c
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Question # 30
The fifth term of (a+2x3)17 is
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4013 x3a13
2208a13 x12
223x7a18
38080a13 x12
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Question # 31
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