Question # 1

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In ax² + bx + c = 0, if b² - 4ac > 0 and perfect square the roots are:

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rational

irrational

equal

complex

Tan (294°) =

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tan24°

-tan24°

cot24°

-cot24°

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degree of P(x) = degree of Q(x)

degree of P(x) < degree of Q(x)

degree of P(x) > degree of Q(x)

none of these

If A = [aij] and B = [bij] are two matrices of same order r × s, then order of A - B is:

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r - s

r × s

r + s

none of these

If ⁿP₂ = 30 then n = :

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5

6

2

3

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30°

45°

60°

75°

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A statement which is true for all possible values of the variables involved in it, is called a:

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tautology

conditional

implication

absurdity

2 sin α cos ß =

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sin (α + ß) - sin (α - ß)

cos (α + ß) + cos (α - ß)

sin (α + ß) + sin (α - ß)

cos (α + ß) - cos (α - ß)

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A is superset of B

B is superset of A

A is subset of B

A is equivalent to B

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

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-1

1

∞

none

If A is a square matrix, then:

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|A^t| = A

|A^t| = -A

|A^t| = |A|

A^t= A

If the elevation of the sun is 30°, the length of the shadow cast by a tower of 150m height is:

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none

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The period of cos 2x is:

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cos⁴Θ - sin⁴Θ =

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sin 2Θ

cos 2Θ

tan 2Θ

sec 2Θ

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0

i

-i

1

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3×3

3×2

2×1

2×3

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

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acute

obtuse

right

oblique

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11th Class ICS Mathematics Test Online MCQs With Answers

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