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ECAT Pre General Science Mathematics Online Test MCQs With Answers
Question # 1
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Question # 2
The set of complex numbers forms
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Commutative group w.r.t addition
Commutative group w.r.t multiplication
Commutative group w.r.t division
Non commutative group w.r.t addition
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Question # 3
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none of these
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Question # 4
The position vector of a point (x, y) in xy plane is
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none of these
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Question # 5
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A
-A
A
t
A
-
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Question # 6
Cycle tyres are supplied in lots of 10 and there is a chance if 1 in 500 tyres to be defective. Using Poisson distribution, the approximate number of lots containing no defective tyre in a consignment of 10, 0000 lots is
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9028
9208
9802
9820
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Question # 7
Φ set is the _______ of all sets
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Subset
Union
Universal
Intersection
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Question # 8
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real number
complex number
rational number
irrational number
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Question # 9
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x
39
40x
39
40x
41
none of these
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Question # 10
The sum of the focal distance from any point on the ellipse 9x2 +16y2 =144 is
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32
16
18
8
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Question # 11
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Question # 12
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Question # 13
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Question # 14
If nis positive integers, then 2
n
>2n+1, only when
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n≤ 3
n≥ 3
n≤ 2
n≤ 1
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Question # 15
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Orthogonal
Involutary
Idempotent
Nilpotent
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Question # 16
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Question # 17
sin(a-90°)=______;
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sina
cosa
-sinθ
-cosa
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Question # 18
If a polynomial P(x) is divided by x - a, then the remainder is
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P(o)
P(-a)
P(a)
None of these
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Question # 19
The number of arbitrary constants in the general solution of a differential equation is equal to the different equation
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Order
Degree
Variables
All are correct
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Question # 20
The5thand 13th terms of an A.P are 5 and-3 respectively The first term of the A.P is
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1
-15
9
2
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Question # 21
pth term of an H.P. is qr and qth term is pr then the rth term of the H.P. is
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pqr
1
pq
pqr
2
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Question # 22
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an A.P.
a G.P.
a H.P.
None of these
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Question # 23
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Question # 24
The sum of n terms of a series is denoted by
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d
n
S
n
a
n
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Question # 25
The sum of all 2 digit number is
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4750
3776
4895
4905
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Question # 26
A Series which does not coverage to a Unique sum is called
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Harmonic Series
Oscillatroy Series
Arithmetic Series
None of these
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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
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(2, 4)
(4, 8)
(0, 2)
(0, -2)
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Question # 28
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(g,f)
(-g,f)
(g,-f)
(-g,-f)
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Question # 29
If n(A) = n then n(P(A)) is
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2n
n
2
n/2
2
n
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Question # 30
For f(x) = x
2
+ px +1, if f(3) = 3 then P =
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3/7
-2/5
-7/5
-7/3
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Question # 31
√-1 b=
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b
2
2b
None of these
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