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ECAT Mathematics Online Test MCQs With Answers
Question # 1
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[0, 0, 0]
[1, 0, 0]
[0, 1, 0]
[0, 0, 1]
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Question # 2
The centre fo the circle x
2
+ y
2
+ 12x -10 = 0 is
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(12, -10)
(6, -5)
(-12, 10)
(-6, 5)
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Question # 3
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Question # 4
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Question # 5
The sum of the squares of three distinct real numbers, which are in G.P., is S
2
. if their sum is
α
S then
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Question # 6
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1
0
5
2
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Question # 7
The 6th term of an arithmetic sequence whose first term is 3 and common difference in zero is
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18
6
3
0
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Question # 8
(1,0) is in the solution of the inequality
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3x + 2y > 8
2x - 3y < 4
2x + 3y > 3
x - 2y < -5
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Question # 9
The fifth term of the sequence a
n
= 2n + 3 is ______
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13
-13
8
3
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Question # 10
sin 2
α
=
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Question # 11
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Question # 12
n(n-1)(2n-1), for all natural numbers n, is divisible by
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12
6
2
18
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Question # 13
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Question # 14
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Question # 15
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Question # 16
tan270° =__________;
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0
1
-1
Undefined
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Question # 17
For any two sets A and, A ⊆ B if
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x ∈ A ⇒ x ∈ B
x ∉ A ⇒ x ∉ B
x ∈ A ⇒ x ∉ B
None of these
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Question # 18
(x
3
-1/2x)
6
is
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15/16 x
2
2/13 x
2
17/7 x
2
16/15 x
2
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Question # 19
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1
-1
-1/2
1/2
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Question # 20
The additive inverse of 0 is
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1
-1
0
Does not exist
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Question # 21
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Associative law of multiplication
Commutative law of addition
Commutative law of multiplication
Associative law of addition
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Question # 22
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Question # 23
Which of the following is a quadrantal angle
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30°
45°
60°
90°
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Question # 24
If n(A) = n then n(P(A)) is
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2n
n
2
n/2
2
n
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Question # 25
Digit in the unit place of the number 183! + 3
183
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7
6
3
0
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Question # 26
Number of selections of n different things out of n
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1
nPr
n!
nPr
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Question # 27
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Question # 28
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Question # 29
By expressing sin 125° in terms of trigonometrical ratios, answer will be
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sin 65° = 0.9128
sin 55° = 0.8192
sin 70° = 0.5384
sin 72° = 0.1982
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Question # 30
The sum of complex number (a,b) and (c,d) is
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