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NAT I Engineering Mathematics MCQs With Answers
Question # 1
If Cosα = 3/5, Cosβ = 5/13, then
Choose an answer
Cos(α +β) =33/65
Sin(α +β) =56/65
sin
2
(α +β/2) =1/65
Cos(α +β) =63/65
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Question # 2
Sin(a + b) + Sin(a- b) =
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Sin a Cos b
Sin a Sin b
Sin a + Cos b
Sin a - 2Cos b
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Question # 3
Two natural numbers whose sum is 25 and difference is 5, are
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25, 20
20, 10
20, 5
15, 10
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Question # 4
The equation of the normal to the circle x
2
+ 2
2
= 25 at (4,3) is
Choose an answer
3x -4y =0
3x -4y= 5
4x + 3y=5
4x - 3y =25
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Question # 5
The point (-5,3) is the center of a circle and P(7,-2) lies on the circle the radius of the circle is
Choose an answer
2
13
7
8
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Question # 6
In the figure PS is perpendicular to QR, if PQ = PR 26 and P8 = 24,then QR=
Choose an answer
10
20
40
26
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Question # 7
Two dice are rolled The number of possible out come in which at least one die shows 2 is?
Choose an answer
5
12
11
7
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Question # 8
There are 30 Red, 20 Green and some Blue bells in a bag if the probability of finding a Red ball is 1/3,how many are red balls in the bag
Choose an answer
120
20
40
90
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Question # 9
Given eight points in a plane no three of which are collinear how many lines do the points determine?
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16
64
28
36
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Question # 10
If the order of A is n x m. Then order of kA is
Choose an answer
Forms a group
Does not form a group
Contains no additive identity
Contains no additive inverse
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Question # 11
Which is an explicit function
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y = x
2
+2x -1
x
2
+xy +y
2
=2
xy
2
-y +9/xy =1
All are
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