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ECAT Mathematics Chapter 1 Number System Online Test MCQs With Answers
Question # 1
a >b, b >c ⇒a >c is a
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Multiplicative property
Additive property
Trichotomy property
Transitive property of inequality
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Question # 2
Name the property used in 1000 x 1 = 1000
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additive inverse
multiplicative inverse
additive identity
multiplicative identity
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Question # 3
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Principle of equality of fractions
Rule for product of fraction
Rule for quotient of fraction
Golden rule of fractions
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Question # 4
Geometrically the modulus of a complex number represents its distance from the
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Point (1,0)
Point (0,1)
Point (1,1)
Point (0,0)
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Question # 5
The symbol of irrational is
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W
N
Q
Q'
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Question # 6
i
2
=
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1
2
-1
0
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Question # 7
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Rational
Irrational
Even
Odd
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Question # 8
The real number system contains.
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Positive Numbers
Negative numbers
Zero
(option a, b and c)
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Question # 9
if Z1 = 1+i, Z2= 2+3i, then |Z2 -Z1| =
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√3 i
√7
-2-i
√5
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Question # 10
A prime number can be a factor of a square only if it occurs in the square at least
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Once
Thirce
Twice
None of these
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Question # 11
1/3 is ______
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A prime number
An integer
A rational number
An irrational number
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Question # 12
0 (zero) is
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An irrational number
A rational number
A negative integer
A positive number
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Question # 13
In (x + iy) x is the known as
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Imaginary part of complex number
Real part of complex number
Complex number
None of above
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Question # 14
∀x,y∈ R and x < 0, y < 0, which one is true
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xy < o
xy = o
xy > o
None of these
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Question # 15
Gooch crucible is made of :
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Brass.
Porcelain.
Bronze.
Gold.
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Question # 16
The equation |x +4| = x has solution
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x = -2
x = 2
x = -4
x = 4
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Question # 17
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Question # 18
6 is
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A prime integar
An irrational number
A rational number
An odd integer
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Question # 19
If Z
1
= 1 + i, Z
2
= 2+3i, then |Z
2
- Z
1
| = ?
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Question # 20
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Question # 21
i
is equal
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(1 , 0)
(0 , 1)
(1 , 1)
(0 , 0)
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Question # 22
If A = {x / x ∈ R ∧ x
2
- 16 = 0} then A =
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- x
Infinite set
Φ
{-4,4}
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Question # 23
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real part of z
imaginary part of z
conjugate of z
modulus of z
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Question # 24
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Question # 25
The negative square root of 9 can be written as:
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-√9
√9
√18
-√18
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Question # 26
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1
-i
i
0
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Question # 27
The solution set of the equation |3x + 2| = 5 is
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Question # 28
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Question # 29
(a-1)-1 =
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a-1
a
-a
None of above
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Question # 30
i
9
=
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i
2
-1
1
i
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