Question # 1

If n is a positive integer then n! is

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(n - 1) (n - 2) .....3,.2.1

n(n - 1) (n - 2) ...3.2.1

n(n - 1 ) ( n -2) ... 3

None of these

In a quadratic equation with leading co-efficient 1, a student reads the co-obtain the roots as - 15 and -4. The correct roots are

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6, 10

-6, -10

8, 8

-8, -8

3x + 4 > 0 is

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equation

identity

inequality

none of these

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0

1

-1

undefined

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1

-1

The area between the x-axis the curve y =4x-x2 is :

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32/2

15

18

21

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Domain of 3 sin x is ______

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[-3, 3]

R

Positive real numbers

None of these

If sinαand cosαare the roots of the equation px²+ qx + r =0, then

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p²- q²+ 2pr = 0

(p + r)²= q²- r²

p²+ q²- 2pr = 0

(p - r)²= q²+ r²

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Always negative

Zero

Always positive

Infinity

The 8th term of (1+2x) ^-1/2is

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-221/16 x⁷

-225/18 x⁷

-407/9 x³

-429/16 x⁷

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If Z₁= 1 + i, Z₂= 2+3i, then |Z₁- Z₂| = ?

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A ________ divides the plane into left and right half planes.

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Vertical line

Horizontal line

Non vertical line

Inequality

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20

10

0

None of these

A,G,H are in

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A.P

G.P

H.P

None of these

For a set A, A∪Ac= ---------------------

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A

∅

Ac

U

If f(x) = x²- x then f(2) is

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4

6

2

0

the curve of the parabola y² = -4ax is symmetric with respect to

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x -axis

y - axis

Botha x and y- axis

None of thes

If #n = (n-5)2 + 5, then find #3 x #4.

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54

12

4

9

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If P is a whole number greater than 1, which has only P and I are factors. Then P is called

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Wholw number

Prime number

Even number

Odd number

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If A = {2m/m³= 8 , m€ Z} then A =

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{1,8,27}

{4}

(2,4,6}

{2,16,54}

If (0,4) and (0,2) are vertex and focus of the parabola respectively, the the equation of the parabola is:

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x² = 4y -32

x² =8y -32

y³ = 16 x

x2 + 8y =32

If -1 < x < 0, which of the following statements must be true?

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x < x²< x³

x < x³< x²

x²< x³< x

x²< x < x³

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∀a,b, c ε R ac = bc ⇒ a = b, c ≠ 0 is a

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Symmetric property

Cancellation property w.r.t multiplication

Reflexive property

Transitive property

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2

0

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