Question # 1

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

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950

760

1230

875

tan(π + cot^-1x ) =

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A matrix of order m×1 is called:

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row matrix

column matrix

identity matrix

scalar matrix

To convert any angle in degrees into radians, we multiply the measure by:

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all of these

Number of digits multiple of 5 made from the digits 2, 3, 5, 7, 9 is:

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5

24

20

none

2 cos α sin ß =

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cos (α + ß) + cos (α - ß)

sin (α + ß) + sin (α - ß)

sin (α + ß) - sin (α - ß)

cos (α + ß) + cos (α - ß)

If s denotes the length of the arc intercepted on a circle of radius r by a central angle of α radians, then:

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s = rα

s = r + α

none of these

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cos (2sin^-1 x) =

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1- 2x²

1 + 2x²

2x²- 1

x²- 1

A set containing finite number of elements is called:

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nullset

superset

finiteset

infiniteset

Which one is not a quadrant angle ?

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0°

90°

280°

270°

For a positive integer n:

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(n+1)! = (n+1)n!

(n+1)! = (n+1)(n-1)!

n! = n(n+1)!

none of these

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0

-1

>1

none

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

2 sin 12° sin 46° =

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cos 34° + cos 58°

sin 34° - sin 58°

sin 34° + sin 58°

cos 34° - cos 58°

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a + c = b + d

a + b = c + d

a - b = c - d

None of these

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closureproperty

associativeproperty

commutativeproperty

trichotomyproperty

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The graph of y = cos^-1 x is obtained by reflecting the graph of y = cos x about:

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x-axis

y-axis

y = x

y = -x

csc (2π - Θ), where Θ is a basic angle, will have terminal side in:

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quad. I

quad. II

quad. III

quad. IV

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