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Mathematics ECAT Pre Engineering Online Test MCQs With Answers
Question # 1
sin -1(sin2π/3) =
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π/2
2π/3
-3π/2
π/3
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Question # 2
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15
15 i
-15 i
-15
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Question # 3
By expressing cos 113° in terms of trigonometrical ratios, answer will be
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− cos 76° = -0.7093
− cos 65° = -0.4258
− cos 67° = -0.3907
− cos 62° = -0.8520
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Question # 4
If a parabola opens down, then its vertex is at the
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Right of the parabola
Left of parabola
Lowest point on the parabola
Highest point on the parabola
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Question # 5
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Question # 6
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Question # 7
If n is any positive integer then n! > n
2
for
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Question # 8
Some of two real numbers is also a real number , this property is called:
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Commutative property w.r.t addition
Closure property w.r.t. addition
Associative property w.r.t. addition
Distributive property w.r.t addition
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Question # 9
The general equation of a circle is
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Question # 10
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0
abc
1/abc
None of these
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Question # 11
Which of the following is the subset of all sets
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Φ
{1,2,3}
{Φ}
{0}
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Question # 12
Tan
-1
1/x = ______
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sin x
sec
-1
X
cot
-1
X
None of these
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Question # 13
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 # 14
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Question # 15
2x + 3y > 4 is a linear inequality in
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one variable
two variables
three variables
none of these
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Question # 16
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3/4
r
v
None of these
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Question # 17
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0
1
2
None of these
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Question # 18
Domain of sec
θ
is
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Question # 19
Matrix multiplication is
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Commutative
Not commutative
Not associative
Not distributive
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Question # 20
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Question # 21
An experiment yields 3 mutually exclusive and exhaustive events A, B, C, if P(A) =2 and P(B) = 3. then P(C) =
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1 / 11
2 / 11
3 / 11
6 / 11
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Question # 22
Which conjunction is not true ?
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Question # 23
Multiplicative inverse of 0 is
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0
1
±1
Does not exist
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Question # 24
The vertices of the ellipse x
2
+ 4y
2
= 16 are
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Question # 25
The set R is ______ w.r.t subtraction
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Not a group
A group
No conclusion drawn
Non commutative group
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Question # 26
The set of the first elements of the orders pairs forming a relations is called its
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Relation in B
Range
Domain
Relation in A
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Question # 27
The distance between the points (0 , 0) and (1, 2) is
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5
0
3
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Question # 28
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Question # 29
The exact value of cos-1 (0) is
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π/2
-π/2
3π
π-π/6
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Question # 30
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A.P.
G.P.
H.P.
None of these
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Question # 31
The slope of the tangent at the point (h,h) of the circle x2 +y2 =a2 is
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0
1
-1
h
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