Question # 1

The mid point of the line segment joining the points A(3,1) and B(-2,-4) is

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(1, -3)

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-1

0

1

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What is the conjugate of -6 -i?

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-6 +i

6+i

-6 -i

6 -i

Circumcentre of the triangle, whose vertices are (0, 0), (6, 0) and (0, 4) is

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(2, 0)

(3, 0)

(0, 3)

(3, 2)

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A complex number

A rational number

A natural number

An irrational number

cos (α+β) + cos (α-β) =

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4 cosαcosβ

2 cosαcosβ

2 sinαsinβ

2 sinαcosβ

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When a selection of object is made without paying regard to the order of selection, it is called

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Sequence

Series

Combination

Permutation

The angle of elevation of a tower from a point A due south of it is x and from a point B due east of A is y. If AB = 1, then the height h of the tower is given by

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The towers each 120 meters high are 800 meters apart. The measure of the angle of elevation from the base of one tower to the top of the other is

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12^𝜊

9^𝜊

7^𝜊

-120^𝜊

(n + 2) (n + 1)n in factorial form is

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