Question # 1

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2

-2

5

-5

ⁿC₄ =ⁿC₈then n = :

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4

12

8

6

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closureproperty

associativeproperty

commutativeproperty

trichotomyproperty

If two sets have no element common, they are called:

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disjoint

over lapping

dissimilar

exhaustive

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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10π

The number of diagonals of a polygon with n sides is:

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none of these

Which of the following is correct:

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2 + 7i > 10 + i

1 + i > 1 - i

4 + 3i > 1 + 3i

none of these

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Inverse sine function is written as:

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(sin x)^-1

sin x^-1

arc sinx

arc sin^-1 x

For a square matrix A, |A| equals:

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A^t

|A^t|

-|A^t|

-A^t

If z = x + i y = r (cos Θ + i sin Θ), then arg z is:

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tan Θ

cos²Θ + sin²Θ

r

Θ

Number of terms in the expansion of (a+b)ⁿ is:

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n

n+1

n-1

none of these

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x-axis

y-axis

y = x

y = -x

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The identity element in a group is:

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unique

inifinite

both a and b

not possible

If the matrices A & B have the orders 2×3 and 5×2 then order BA is:

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3×5

5×2

2×2

none

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p is false and q is true

both p and q are false

p is true and q is false

both p and q are true

The period of 2 - sin 3x is:

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