Question # 1

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sec (-360°) = ______

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0

1

2

3

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√25 is a number

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Rational

Irrational

Natural

Odd

The function f{(x, y) | y = ax²+ bx + c} is

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One-one function

Constant function

Onto function

Quadratic function

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-2x³

2x^-3

-2x^-3

2x³

Three dice are thrown together. The probability of getting a total of at least 6 is

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103 / 108

10 / 216

93 / 108

None of these

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cos 2x + c

- cos 2x + c

tan 2x + c

cot 2x + c

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

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3 x 3

3 x 2

2 x 5

5 x 2

The horizontal distance between the two towers is 60 m. the angular elevation of the top of the taller tower as seen from the top of the shorter one is 30°. If the height of the taller tower is 150 m, the height of the shorter one is

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116 m

200 m

216 m

None of these

For graphing a linear inequality, solid line is drawn if the inequality involves the symbols:

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> or <

= or≠

= or >

Sin 50°-sin 70°+sin 10° is equal to

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1

0

1/2

2

The roots of the equation ax²+ bx + x = 0 are real and distinct if

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b²- 4ac <0

b²- 4ac = 0

b²- 4ac > 0

None of these

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The period of the function f(x) = sin⁴x + cos⁴x is

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π

π/2

2π

None of these

The sum of coefficients in the binomial expansion equals to

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2

2ⁿ⁺¹

2^n-1

2ⁿ

The lotus of intersection of perpendicular tangents to the parabola y² = 4ax is:

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Axis of the parabola

Focal chord of the parabos

The tangent at vertex of the parabola

a directrix of the parabola

If f(x) = (-x)²then f(-2) is

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0

2

-4

4

Multiplicative inverse of 0 is

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0

1

±1

Does not exist

The roots of (b-c)x2+(c-a) x+a-b=0 are equal if

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2b = a+c

2a = b+c

2c = a+b

a + b + c =0

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(a^-1)^-1=

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a^-1

a

-a

None of above

How many arrangements of the letter of the word PAKPATTAN can be made

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

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The equation of the plane which bisects the line joining (2, 3, 4) and (6, 7, 8) is

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x + y + z - 15 = 0

x - y + z - 15 = 0

x - y - z - 15 = 0

x + y + z + 15 = 0

Only one of the root of ax2 + bx + c =0, a≠ 0 is zero if

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c = 0

c = 0,b≠ 0

b = 0,c = 0

b = 0,c≠ 0

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csc(-π/2) = __________;

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0

1

-1

Undefined

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