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Mathematics ECAT Pre Engineering Online Test MCQs With Answers
Question # 1
202.04 is an example of
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Recurring decimals
Non-recurring decimals
Terminating decimals
None of above
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Question # 2
If the lines 2x-3y-1=0,3x-y-5=0 and 3x+py+8=0 meet at a unique point then
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p = -14
p = -1
p =0
p=12
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Question # 3
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sin h x
cos h x
tan h x
cot h x
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Question # 4
Order (or sense) of an inequality is changed by multiplying or dividing its each side by a:
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Zero
one
negative constant
Non negative constant
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Question # 5
Associative law of multiplication
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ab - ba
a(bc) = (ab) c
a(b + c) = ab +ac
(a +b)c = ac + bc
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Question # 6
Period of cos x is _____
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Question # 7
The expansion of (1 + 2x)
-2
is valed if
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| x | < 1/2
| x | < 1
| x | < 2
| x | < 3
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Question # 8
A and B be two square matrices and if their inverse exist, the (AB)
-1
=
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A
-1
B
-1
AB
-1
A
-1
B
B
-1
A
-1
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Question # 9
Given two independent event A and B such that P(A) = 0.30 and P(B) = 0.60. Probability of getting neither A nor B is
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0.28
0.13
0.12
0.42
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Question # 10
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Question # 11
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Reflexive property
Symmetric property
Cancellations property w.r.t. addition
Transitive property
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Question # 12
The sum of first n even number is
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n2
n(n+1)
n+1
n+2
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Question # 13
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Question # 14
(a,0) x (c,0) =
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(0,ac)
(ac,0)
(0,0)
(a,c)
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Question # 15
A function from X to Y is written as
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f : X to Y
f : Y to Y
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Question # 16
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2x
3x
2
1
0
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Question # 17
In (x + iy), y is called as
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Imaginary part
Complex number
Real part
None of above
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Question # 18
In quadratic equation, if the replacement of y with -y leaves the equation unchanged, then the graph is
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Straight line
Circle
Hyperbola
Symmetric w.r.t.0
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Question # 19
The square matrix A is skew Hermitian when (A)'=
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A
A'
-A
A
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Question # 20
Which is the proper rational function
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Question # 21
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Question # 22
The behavior of trigonometric function is called
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Continuity
Discontinuity
Periodicity
Smoothness
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Question # 23
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Question # 24
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Question # 25
Five engineering, four mathematics, two chemistry books are placed on a table at random.The probability that the books of each kind are all together is
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Question # 26
The 10th common term between the series 3+7+11+....... and 1 + 6 +11 + ....... is
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191
193
211
None of these
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Question # 27
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Question # 28
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Question # 29
sin (2
π
-
θ
)
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cos
θ
sin
θ
tan
θ
-sin
θ
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Question # 30
The third term of the sequence a
n
= (-1)
n-1
(n-7) is ______
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8
4
-4
8
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Question # 31
[i,j,k]
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0
2
1
-2
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