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ECAT Mathematics Online Test MCQs With Answers
Question # 1
0 is a symbol of
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singleton set
Empty set
Equivalent set
Infinite set
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Question # 2
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n!
0!
1
None of these
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Question # 3
The liner equation ax + by = c is called _________ of the inequality ax +by > c.
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Associated equation
Non-associated equation
disjoint equation
Feasible equation
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Question # 4
tan
-1
x > cot
-1
x holds for
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x > 1
x < 1
x = 1
All values of x
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Question # 5
If A is a subset of B and B contains at least one element which is not an element of A, then A is said to be
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Improper subset of B
Super set of B
Proper subset of B
None of these
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Question # 6
Tan
-1
1/x = ______
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sin x
sec
-1
X
cot
-1
X
None of these
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Question # 7
2cos2 a/2 =______;
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1+sina
1-sina
1+cosa
1-cosa
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Question # 8
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Square matrix
Row matrix
Symmetric matrix
Null matrix
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Question # 9
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Question # 10
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184
none of these
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Question # 11
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1
-1
0
None of these
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Question # 12
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2
2
- n - 1
1 - 2
-n
n + 2
-n
-1
2
n
- 1
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Question # 13
(0,0) is in the solution of the inequality
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x + y > 3
x - y > 2
3x + 2y > 5
3x - 2y < 2
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Question # 14
The sum of all positive integral multiple of 5 less than 100 is
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950
760
1230
875
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Question # 15
The distance between two points P(x
1
, y
1
) and Q (x
2
, y
2
) is
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Question # 16
The period of the function f(x) = sin
4
x + cos
4
x is
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π
π
/2
2
π
None of these
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Question # 17
The multiplicative inverse of -1 in the set {1-, 1} is
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1
-1
0
Does not exist
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Question # 18
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-8
8
8i
32
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Question # 19
The distance of the points (3, 4, 5) from y-axis is
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Question # 20
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A.P.
G.P.
H.P.
None of these
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Question # 21
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Question # 22
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Question # 23
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Question # 24
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Question # 25
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Question # 26
a >b, b >c ⇒a >c is a
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Multiplicative property
Additive property
Trichotomy property
Transitive property of inequality
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Question # 27
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0
1
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Question # 28
If f(x) = x
2
then f(-2) is
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-2
2
4
-4
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Question # 29
Range of tan x is ______
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[-1, -]
R
Negative real numbers
R - {x | - 1 < x < 1}
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Question # 30
The range of the principal sine function is
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Question # 31
Cot 45° = ______
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