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ECAT Pre General Science Mathematics Online Test MCQs With Answers
Question # 1
The set of all positive even integers is
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Not a group
A group w.r.t. subtraction
A group w.r.t. division
A group w.r.t. multiplication
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Question # 2
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0
1
-1
None
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Question # 3
The physical quantity which possesses both magnitude and direction is called a
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scalar
vector
constant
none of these
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Question # 4
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G.P
H.P.
A.P.
No particular sequence
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Question # 5
The roots of the equations will be equal if b
2
- 4ac is
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Positive
Negative
1
Zero
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Question # 6
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Question # 7
A triangle which is not right angle is called ______ triangle
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acute
Obtuse
Right
Oblique
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Question # 8
The horizontal distance between the two towers is 60 m. the angular elevation of the top of the taller tower as seen from the top of the shorter one is 30°. If the height of the taller tower is 150 m, the height of the shorter one is
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116 m
200 m
216 m
None of these
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Question # 9
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7
5
6
None of these
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Question # 10
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cos x
sec x tan x
sec
2
x
-cosec
2
x
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Question # 11
The multiplicative inverse of 1 is
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1
-1
0
Does not exist
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Question # 12
The distance of the point (-2 , -3) from y-axis is
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2
-2
3
-3
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Question # 13
If y=f(x) is a function then y is called
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dependent variable
independent variable
constant
none of these
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Question # 14
The additive inverse of a matrix A is
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None of these
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Question # 15
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Question # 16
The nth term of a G.P. is
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a
1
r
n
a
1
r
n+1
a
1
r
n-1
a
1
r
-n
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Question # 17
A sequence is a functions whose domain is a subset of the set of
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Natural numbers
Real numbers
Whole numbers
Rational numbers
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Question # 18
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Question # 19
tan(cot
-1
x) is equal to
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cot(tan
-1
x)
tan x
secon x
None of these
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Question # 20
The differential equations of all conis whose axes coincide with the co-ordinate axis is
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Question # 21
The distance between the points (0 , 0) and (2, 1) is
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5
0
3
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Question # 22
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Question # 23
For any integer k, w
n
= ______ when n = 3k
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1
2
0
-4
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Question # 24
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Question # 25
For n€ N,2
n>2
> n is to only when
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n<2
n≤ 4
n≥ 4
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Question # 26
(-28,12) divides the join of A(-6,3) and B(5,-2) in ratio
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1:2
3:2
2:3
2:1
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Question # 27
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none of these
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Question # 28
The sum of all even numbers less than 100 is
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2450
2352
2272
2468
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Question # 29
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Question # 30
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I quadrant
II quadrant
III quadrant
IV quadrant
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Question # 31
The property used in -3 <-2 ⇒0 <1
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Commutative property
Additive property of inequality
Additive inverse
Additive identity
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