Question # 1

For what value of k, the sum of the roots of the equation x² + kx + 4 = 0 is equal to the product of its roots:

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±1

4

±4

-4

Which one is radical equation:

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ax² + bx + c

ax + b = 0

2^x = 16

Zero is:

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a natural number

a whole number

a positive integer

a negativeinteger

-2 sin α sin ß =

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sin (α + ß) + sin (α - ß)

cos (α + ß) + cos (α - ß)

cos (α + ß) - cos (α - ß)

cos (α - ß) + cos (α - ß)

The period of sec 3x is :

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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

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4

6

8

10

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20

The set of negative integers is closed with respect to:

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addition

multiplication

both (a) and (b)

subtraction

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equal sets

null sets

overlapping sets

subsets

The probability that a number selected from the numbers 1, 2, 3, 4, 5, ......, 16 is a prime number is:

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singular

non-singular

rectangular

null

If sin α < 0 and cos α > 0, then α lies in:

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I

II

III

IV

Sum of all positive integral multiples of 3 less than 100 is:

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950

760

1230

875

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x = 0

y = 0

x = 0 and y = 0

x = 0 or y = 0

The period of cot x is:

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If A is a square matrix, then A - A^t is:

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Conjugate of a- i b is:

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b + ia

-a + ib

-a - ib

a + ib

Rational numbers are:

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repeating decimals

terminatingdecimals

periodicdecimals

all of these

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