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ECAT Pre General Science Mathematics Online Test MCQs With Answers
Question # 1
The length of the tangent from (2, 1) to the circle x
2
+ y
2
+ 4y + 3 = 0 is
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Question # 2
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9
-9
0
1
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Question # 3
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Question # 4
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additive property
multiplicative property
additive inverse
additive identity
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Question # 5
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 # 6
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2
0
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Question # 7
Derivative of a w.r.t x is
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0
1
x
x
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Question # 8
For non-trival solution |A| is
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non zero
A = 0
|A| = 0
At = 0
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Question # 9
One root of the equation cos x - x + 1/2 = 0 lies in the interval
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Question # 10
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Commutative law of multiplication
Closure law of multiplication
Associative law of multiplication
Multiplication identity
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Question # 11
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Imaginary
Rational
Irrational
Real numbers
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Question # 12
A box contains 10 red 30 white and 20 black marbles When a marble is drawn at random the probability that it is either red or white is
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1/6
1/3
1/2
2/3
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Question # 13
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Question # 14
A square matrix A = [aij] is lower triangular matrix when:
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aij = 0 for all i < j
bij = 0
cij = 0
dij =0
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Question # 15
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Question # 16
The range of y = sin x is ______
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[1, -1]
[-1, 1]
[0, -1]
[-
∞
+
∞
]
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Question # 17
The smallest positive root of the equation tan x - x = 0 lies on
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Question # 18
The roots of the equation ax
2
+ bx + c = 0 are complex/imaginary if
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b
2
- 4ac < 0
b
2
- 4ac = 0
b
2
- 4ac > 0
None of these
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Question # 19
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Question # 20
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0
1
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Question # 21
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Question # 22
Period of sin 3x is ______
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Question # 23
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none of these
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Question # 24
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A
-A
A
t
A
-
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Question # 25
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Question # 26
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None of these
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Question # 27
PQ is a post of given height a, and AB is a tower at some distance;
α
and
β
are the angles of elevation of B, the top of the tower, at P and Q respectively. The height of the tower and its distance from the post are
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Question # 28
The area of a sector with central angle of 0.5 radians in a circular region whose radius is 2m is
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Question # 29
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Question # 30
Number of ways of writing the letters of WORD taken all at a time is
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24
4
12
6
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Question # 31
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I3
rI3
r
none
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