Question # 1

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1

-1

The set {-1, 1} is

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Group under the multiplication

Group under addition

Does not form a group

Contains no identity element

If x,y are two -ve distinct numbers then

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A>G>H

A<G<H

A=G=H

None of these

The negative square root of 9 can be written as:

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-√9

√9

√18

-√18

A circle passing through the vertices of any triangle is called

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Circumcirle

Incircle

Escribed circle

Unit circle

Cos 0° = ______

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-1

0

1

Undefined

cos (α+β) + cos (α-β) =

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4 cosαcosβ

2 cosαcosβ

2 sinαsinβ

2 sinαcosβ

tan (π-θ) = ______

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- sinθ

- tanθ

- cosθ

- cotθ

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The equation of the circle with centre origin and radius r is

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x²+ y²= 1

x²+ y²= r²

x²+ y²= 0

x²- y²= r²

Which term of the A.P 5,8,11,24.............is 320

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104th

106th

105th

64th

A function which is to be maximized or minimized is called an

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Explicit function

Implicit function

Objective function

None

The middle term in the expansion of (a +x)¹²is

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7th

8th

9th

6th

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0

1

2

None of these

Every recurring decimal represents

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A natural number

A rational number

An irrational number

A whole number

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none of these

If C={p/p < 18, p is a prime number}, then C =

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{2,3,4,.........17}

{2,4,6,8................16}

{1,3,5,7,9,11,13,15,17}

{3,6,9,12,15}

In R the right cancellation property w.r.t. addition is

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If A is a subset of B and B contains at least one element which is not an element of A, then A is said to be

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Improper subset of B

Super set of B

Proper subset of B

None of these

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Two coins are tossed twice each. The probability that the head appears on the first toss and the same forces appear in the two tosses is

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1/4

1/2

1/3

1/7

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A

A'

U

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The graph of the quadratic equation is

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Straight line

Circle

Parabola

elipse

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The parabola y²= x is symmetric about

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x-axis

y-axis

Both x and y-axis

The line y = x

The proposition S(n) is true∀n∈N,S(k+1) true when ______is true

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S(1)

Both a & c

S(k)

None

A∪(A∪B)= --------------------

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B

A

A∪B

None of these

If z₁ =√-36 ,z₂ =√-25,z3 =√-16 then

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15

15i

-15i

-15

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