Question # 1

One of the roots of the equation 3x2 + 2x + k = 0 is the reciprocal of the other, then k = ...............:

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3

2

1

4

If f(x) = arccos x, then:

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The number of ways in which fiver persons can sit at a round table is:

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4!

5!

none of these

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Synthetic division is a process of:

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division

subtraction

addition

multiplication

Sum of all odd numbers between 100 and 200 is:

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6200

6500

3750

7500

A triangle which is not right angle triangle called ________ triangle:

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acute

obtuse

right

oblique

In a simultaneous throw of two dice, The probability of getting a total of 7 is:

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integer

rational number

irrational number

natural number

If z₁ = 4i and z₂ = 3 - 9i, then z₁ + z₂ =

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3 - 5i

3i - 5

7 - 9i

3 + 5i

The period of 2 - sin 3x is:

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The reciprocal of the terms of A.P. form:

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A.P

G.P

H.P

none of these

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r r₁ r₂ r₃ =

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abc

The ordered pairs (4, 5) and (5, 4) are:

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same

different

both a and b

N

Sum of all three cube roots of unity is:

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1

-1

0

3

If an angle α is allied to an angle ß, then α ± ß = __________:

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90°

multiple of 90°

180°

multiple of 180°

A clock strikes once when its hour hand is at one, twice when it is at two, and so on. How many times does the clock strike in ten hours ?

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55

78

66

46

The imaginary part of the complex number a + bi is:

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a

b

bi

none of these

Cot1°, Cot2°, Cot3°, .......... Cot89° =

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-1

1

∞

none

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