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Mathematics ECAT Pre Engineering Online Test MCQs With Answers
Question # 1
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Question # 2
14 is not a
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Prime number
Whole number
Even number
Real number
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Question # 3
20. 19. 18. 17= _______
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Question # 4
The range of the principle cot function is
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Question # 5
If S and P are the sum and the product of roots of a quadratic equation, then the quadratic equation is
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x
2
+ Sx - P = 0
x
2
- Sx + P = 0
x
2
- Sx - P = 0
X
2
+ Sx + P = 0
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Question # 6
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0
1
-1
2
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Question # 7
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Question # 8
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Question # 9
The statement that a group can have more than one identity elements is
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True
False
Fallacious
Some times true
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Question # 10
The multiplicative inverse of 1 is
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1
-1
0
Does not exist
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Question # 11
If z = (x,y) , then z ̅ =
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(-x,y)
(x,-y)
(-x, -y)
None of these
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Question # 12
The general term of the A.P. is
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a
1
+ (n - 1) d
n + (a
1
- 1) d
d + (n - 1) a
1
None of these
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Question # 13
If f (x) = |x|, then (0,0) is the
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Critical point
Inflection point
Stationary point
None of these
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Question # 14
0.25 is ______
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An irrational number
A natural number
A prime number
A rational number
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Question # 15
Arithmetic mean between a and b is
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Question # 16
A square matrix A for which A
t
= -A is called a
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Column matrix
Symmetric matrix
Skew-symmetric matrix
Row matrix
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Question # 17
The angle of elevation of a tower from a point A due south of it is x and from a point B due east of A is y. If AB = 1, then the height h of the tower is given by
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Question # 18
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none of these
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Question # 19
(x +a)(x +b)(x +c)(x +) = k, k≠0 is reducible to quadratic form only if
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a+b=c+d
a+c=b+d
a+d=b+c
All are correct
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Question # 20
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A
B
A'
None of these
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Question # 21
x = ________ is in the solution of 2x - 5 > 0
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0
2
-2
3
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Question # 22
The domain of the function x/x
2
-4 is given by
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R
R + 2
[R - (
+
2)
R-4
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Question # 23
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0
-1-w
2
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Question # 24
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none of these
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Question # 25
A series consisting of an unlimited number of terms is termed as an
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Finite sequence
Infinite sequence
Infinite series
geometric sequence
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Question # 26
E-radius corresponding to < B is
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Question # 27
In R the right cancellation property w.r.t. addition is
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Question # 28
If distance between (a,2) and (0,0) is 2 then a = _______
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0
2
4
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Question # 29
The coefficient of x
18
in (ax
4
-bx)
9
after expansion is
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84a
3
b
6
22a
3
b
6
27a
4
b
5
28a
3
b
6
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Question # 30
e-radii are denoted by
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η
r2
r3
All of these
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Question # 31
If ab > 0 and a < 0, which of the following is negative?
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b
-b
-a
(a - b)
2
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