Question # 1

If x - 2 is a factor of ax2- 12x + a = 2a, then a = ______

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-5

5

0

1

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none of these

The probability to get an odd number in a dice thrown once is

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6

1

1/6

1/2

The order of the matrix A is 3 x 5 and that of B is 2 x 3.The order of the matrix BA is

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2 x 3

3 x 2

2 x 5

5 x 2

The differential equations of all conis whose axes coincide with the co-ordinate axis is

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In R, the multiplicative identity is

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0

1

-1

None

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0

1

none of these

The set {x|x∈N∧x-4=0} in tabular form is

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{-4}

{0}

{}

None of these

If f(x) = (-x)²then f(-2) is

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0

2

-4

4

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The value of x for which the polynomials x2 - 1 and x2 -2x + 1 vanish simultaneously is

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2

1

-1

-2

r + 3 >5 then which is true

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r + 2 > 4

r + 2 < 4

r + 2 = 4

None

If f(x) = x²then f(-2) is

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-2

2

4

-4

∛8.6 is approximately equal to

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2.488

2.48

2.0488

2.05

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(x³- 3x²)⁸+ c

3x²- 6x + c

The axis of the parabola y²= 4ax is

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X = 0

Y = 0

X = y

X = -y

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x³⁹

40x³⁹

40x⁴¹

none of these

If (2,0) is the vertex and y-axis is directrix of parabola then focus is

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(2,0)

(-2,0)

(4,0)

(-4,0)

The third term of the sequence a_n= (-1)^n-1(n-7) is ______

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8

4

-4

8

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4(x³- 3x²)³+ c

3x²- 6x + c

The value of sin²20° + sin²70° is equal to

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1

2

-1

1/2

The condition for polynomial equation ax2 + bx + c = 0 to be quadratic is

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a > 0

a < 0

a≠ 0

a≠ 0,b ≠ 0

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A circle passing through the vertices of any triangle is called

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Circumcirle

Incircle

Escribed circle

Unit circle

The sample space for tossing a coin once is

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{T, T}

{H, H}

{H, T}

None of these

Cofactor of an element aij denoted by Aij is

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(-2)i+j

Mij

(-1)i+j Mij

None of above

A matrix with a single column is called

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Column matrix

Row matrix

Identity matrix

Null matrix

The exact value of cos^-1 (-1) + cos^-1(1) =

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π

-π

π/2

π/3

Range if y = cos x is

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-1≤ y≤ 1

-1 < y < 1

-∞ < x < +∞

None of these

14 is not a

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Prime number

Whole number

Even number

Real number

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0.9

0.74

0.2016

None of these

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