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Mathematics ECAT Pre Engineering Online Test MCQs With Answers
Question # 1
The set {x|x∈N∧x-4=0} in tabular form is
Choose an answer
{-4}
{0}
{}
None of these
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Question # 2
Choose an answer
Lies between 4 and 7
Lies between 5 and 9
Has no value between 4 and 7
Has no value between 5 and 9
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Question # 3
The only function which is both even and odd is
Choose an answer
f(x) =α
f(x) = x
f(x) =0
Both A & B
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Question # 4
For what value of k, 3x -2y+ k= 0 is tangent to the circle x2 +y2 +6x -4y =0
Choose an answer
k=0
k=0 or 26
k = 26
k=-13
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Question # 5
A card is drawn from a pack of cards numbered 2 to 53. the probability that the number on the card is prime number less than 20 is
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2 / 13
4 / 13
5 / 13
8 / 13
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Question # 6
The negation of given number is a
Choose an answer
Binary operation
Unary operation
Relation
None of these
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Question # 7
If a +b +c =0 then which of the following is true
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a =b =c =0
a,b =b,c =c,a
a xb=b xc =c xa
None
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Question # 8
The angle between lines xy =0 is
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45°
60°
90°
180°
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Question # 9
Through how many radians does the minute hand of a clock turn in one hour
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Question # 10
Choose an answer
none of these
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Question # 11
The eccentricity of the conic 9x
2
- 16y
2
= 144 is
Choose an answer
4/5
5/4
4/3
3/4
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Question # 12
The fifth term of an A.P. Whose first term is 5 and common difference is 3,is
Choose an answer
20
17
25
30
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Question # 13
If f(α) = b2 and g (c) =d where c=b2 then (gof)(a) is
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α
c
b
d
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Question # 14
The equation of the normal to the circle x
2
+ y
2
= 25 at (4, 3) is
Choose an answer
3x - 4y =0
3x - 4y =5
4x + 3y = 5
4x + 3y = 25
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Question # 15
A sequence is a function whose domain is
Choose an answer
N
Subset of N
R
None of these
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Question # 16
Choose an answer
0
abc
1/abc
None of these
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Question # 17
Every relation, which can be represented by a linear equation in two variables, represents a
Choose an answer
Relation
Cartesian product
Function
Graph
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Question # 18
If a = {2m/2m < 9 ,m€ p} , the (n A) =
Choose an answer
{2,3,4,5,6,7,8}
{2,4,6,8............16}
{ 4, 6}
{2,3,5,7}
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Question # 19
Ifα,β are non-real roots of ax2 + bx +c =0 (a,b,c∈ Q),then
Choose an answer
α = β
αβ = 1
α = β
α = 1
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Question # 20
The value of p for which both the roots of the equation 4x2- 20x + (25p2+ 15 p - 66) = 0 are less than 2, lies in
Choose an answer
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Question # 21
An equation in which at least one term contains dy/dx, d
2
y /dx
2
etc, is called.
Choose an answer
Differential equation
Initial condition
General solution
Singular equation
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Question # 22
The mid point of the line segment joining the points A(3,1) and B(-2,-4) is
Choose an answer
(1, -3)
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Question # 23
The harmonic mean between a and b is
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Question # 24
Given two numbers a and b. Let A denote the single A.M. between these and S denote the sum of n A.M.'s between them. Then S/A depends upon
Choose an answer
n, a, b
n, a
n, b
n
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Question # 25
Choose an answer
a = -1/2, b = -1
a = 1, b = 2
a = 2, b = 3
None of above
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Question # 26
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Question # 27
The number of non zero rows in echelon form of a matrix is called
Choose an answer
Order of matrix
Rank of matrix
Row operation
None of these
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Question # 28
If f(x) = x
3
- 2x
2
+ 4x -1 then f(2) is
Choose an answer
7
-16
16
-9
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Question # 29
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Question # 30
{x|x∈R∧x≠x} is a
Choose an answer
Infinite set
Null set
Finite set
None of these
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Question # 31
p, q, r and s are integers. If the A.M. of the roots of x2- px + q2= 0 and G.M. of the roots of x2- rx + s2= 0 are equal, then
Choose an answer
q is an odd integer
r is an even integer
p is an even integer
s is an odd integer
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