Question # 1

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1

0

2

3

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diagonal matrix

The middle term of (x-y)¹⁸ is:

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9th

10th

11th

none of these

The roots of the equation:

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complex

irrational

rational

none of these

How many complex cube roots of unity are there:

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2

0

1

3

If W = {0, 1, 2, 3, 4, ........}, N = {1, 2, 3, 4 ...........} then N - W = ?

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W

{0}

none of these

A reference angle Θ is always:

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The ordered pairs (2, 5) and (5, 2) are:

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not equal

equal

disjoint

empty

The angle between 0° and 360° and co-terminal with - 620° is:

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100°

200°

300°

320°

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tan (α+ß) =

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scalar matrix

diagonalmatrix

lower triangularmatrix

upper triangularmatrix

If each element of a 3 × 3 matrix A is multiplied by 3, then the determinant of the resulting matrix is:

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|A|³

27|A|

3|A|

9|A|

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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30°

45°

60°

75°

A^-1 exists if A is:

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singular

nonsingular

symmetric

none

A set having no element is called:

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null set

subset

singleton

superset

Which one is exponential equation:

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ax² + bx + c = 0

ax + b = 0

2^x = 16

A sequence is denoted by:

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{a_n}

a_n

a₁ + (n-1) d

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