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ECAT Mathematics Online Test MCQs With Answers
Question # 1
No term of a harmonic sequence can be
Choose an answer
0
1
2
3
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Question # 2
Decimal part of irrational number is
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Terminating
Repeating only
Neither repeating nor terminating
Repeating and terminating
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Question # 3
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Question # 4
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Question # 5
If Z
1
= 1 + i, Z
2
= 2+3i, then |Z
1
- Z
2
| = ?
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Question # 6
sin (
α
+
β
) - sin (
α -
β
) =
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4 cos
α
sin
β
2 cos
α
sin
β
4 cos
α
cos
β
4 sin
α
sin
β
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Question # 7
Choose an answer
f(x) = x
2
f(x
2
) = x
f(x) = x
none of these
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Question # 8
Let S
n
denote the sum of the first n terms of an A.P. If S
2n
= 3 S
n
: S
n
is equal to
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4
6
8
10
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Question # 9
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Question # 10
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Question # 11
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Question # 12
If A and B are two sets then any subset R of A x B is called
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relation on A
relation on B
relation from A to B
relation from B to A
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Question # 13
The sum of first 60 natural numbers is
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1830
3660
1640
1770
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Question # 14
The property used in -3 <-2 ⇒0 <1
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Commutative property
Additive property of inequality
Additive inverse
Additive identity
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Question # 15
Area bounded between the curve xy=2 and the lines x=1 and x=2
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ln2 square units
ln√2 square units
ln4 square units
Square units
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Question # 16
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2
5
7
None of these
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Question # 17
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0
1
2
1/2
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Question # 18
The solution set of x
2
- 5x + 6 = 0 is
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{1, 3}
{2, 3}
{1, 2}
None of these
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Question # 19
5th term of a G.P. is 2, then the product of first 9 terms is
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256
128
512
None of these
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Question # 20
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Question # 21
If the intersection of two sets is non-empty, but either is a subset of other are called
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Disjoint sets
Over lapping
Equal sets
None of these
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Question # 22
The domain of an infinite sequence is a
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Set of natural numbers
R
Subset of N
None of the above
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Question # 23
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Commutative property of addition
Closure property of addition
Additive inverse
Associative property w.r.t. to addition
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Question # 24
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Question # 25
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Question # 26
An equation which hold good for all values of the variables is called
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Identity
fraction
mixed form
Partial equation
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Question # 27
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 # 28
The physical quantity which possesses both magnitude and direction is called a
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scalar
vector
constant
none of these
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Question # 29
Sine is a periodic function and its period is ______
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π
s
2
π
4
π
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Question # 30
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16
None of these
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Question # 31
If D = {a} , the P(D) =
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{a}
∅
{∅,{a}}
{∅,a}
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Question # 32
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Question # 33
In R, the multiplicative identity is
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0
1
-1
None
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Question # 34
The set of natural numbers is a subset of
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{1, 2, 3, .... 100}
The set of whole numbers
{2, 4, 6, 8, .....}
None of these
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