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Mathematics ECAT Pre Engineering Online Test MCQs With Answers
Question # 1
∀x,y∈R and x> 0 , y>0, if x > y
Choose an answer
None of these
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Question # 2
The exact value of cos
-1
(-1) + cos
-1
(1) =
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π
-π
π/2
π/3
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Question # 3
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Question # 4
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Question # 5
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Question # 6
The set which has no proper subset is
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{0}
{}
{∅}
None of these
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Question # 7
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A
A'
U
U'
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Question # 8
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5
15
10
20
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Question # 9
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A
2
- 5A + 7I = 1
2A
2
- 3A + 7I = 0
A
2
- 5A + I = 0
A
2
- 5A + 7I = 0
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Question # 10
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Question # 11
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Question # 12
Union of the sets of rational and irrational numbers is called 6th set of
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Natural numbers
Real numbers
Whole numbers
Prime numbers
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Question # 13
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-cosec
2
x
-sec
2
x
- cosec x cot x
cosec x
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Question # 14
What is range of the function g (x) =|x-3|?
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[0 ,∞ )
(0 ,∞)
(-∞ ,3]
[0,∞)
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Question # 15
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A = x, B = 1
A = 0, B = 2
A = -1, B = 1
A = x-1, B = x + 1
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Question # 16
If z
1
=√-36 ,z
2
=√-25,z3 =√-16 then
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15
15i
-15i
-15
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Question # 17
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1
-1
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Question # 18
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Question # 19
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Question # 20
The decimal fraction in which we have finite number of digits in its decimal part is called.
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recurring decimal fraction
Non terminating faction
Non recurring fraction
terminating decimal fraction
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Question # 21
Form a group of 5 men and 3 women, a committee of 4 persons is to be selected randomly. The probability that there is a majority of men is
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1/4
1/3
1/2
1/6
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Question # 22
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Question # 23
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Question # 24
The value of the expression 3 cosθ+ 4 sinθθlie between
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-7 and 7
-25 and 25
-1 and 1
-5 and 5
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Question # 25
The set R is ........w.r.t subtraction
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Not a group
A group
No conclusion drawn
Non commutative group
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Question # 26
The additive inverse of 2/3 is
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3/2
-2/3
-3/2
0
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Question # 27
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Question # 28
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1
12
5
29
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Question # 29
The many subset can be formed from the set {a,b,c,d}
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8
4
12
16
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Question # 30
Which shape of the following objects are approximately parabolic ares?
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Light reflectors
Force
Weight of the pendul
None of these
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Question # 31
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