Question # 1

If A(x₁, y₁) , B(x₂, y₂) and C(x₃, y₃) are the vertices of a triangle then its centroid is

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If sided of𝜟ABC are 16,20,and 33, then the value of the greatests angle to

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150𝜊 20'

132𝜊 35'

101𝜊 25'

160𝜊 50'

The sum of infinite numbers of terms of an arithmetic series is

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Finite

Infinite

May or may not finite

None of these

(a,b) +(-a,-b) =

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(0,0)

(a,b)

(-a,-b)

(1,1)

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An infinite sequence has no

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nth term

Last term

Sum

None of these

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sin(π+θ)=_______;

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sinθ

cosθ

-sinθ

-cosθ

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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

Number of selections of n different things out of n

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1

nPr

n!

nPr

cos 2α=

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sin²α+ cos²α

-cosθ

tanθ

None of these

Domain of 1+cot2θ=csc2θ is

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[0,π]

R-{x/x=nπ,n∈ z}

(-∞,+∞)

[-1,1]

The point where the axis meets the parabola is called

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Directrix

Foucu

Chord

Vertix

7²ⁿ+ 3^n-1. 2^3n-3is divisible by

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24

25

9

13

The set {0,-1} hold closure property under

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Addition

Both a & c

Multiplication

None of these

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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none of these

The transport of a null matrix is

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Row matrix

Column matrix

Square matrix

Null matrix

If a,β are the roots of ax2+bx+c=0,the equation whose roots are doubled is

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ay2 +2by+c=0

ay2+2by+4c=0

ay2+2by+c=0

ay2+by+4c=0

(a-1)-1 =

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a-1

a

-a

None of above

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2

0

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6

20

0

A function whose range is just one elements is called

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One-one function

Constant function

Onto function

Identity function

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

Identity w.r.t intersection in a power set of any set is

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∅

Set itself

Singleton set

{0}

n!/(n-1)!=

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n

n!

(n-1)!

0!

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trigonometric equation

conditional equation

identity

None

In R, the additive inverse of a is

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0

1

-a

1/a

If a₁, r are first term and the common ratio respectively then the sum of an infinite geometric series is

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If f(x) = x³- 2x²+ 4x -1 then f(0) is

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0

1

-1

none of these

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