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NAT I General Science Mathematics MCQs With Answers

Question # 1

If Z₁ = 1+i, Z₂ = 2+3i, then |Z₂-Z₁|=?

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√3 I

√7

-2-1

√5

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Question # 2

Sin^-1 (-x) =?

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Sin^-1 x

-Sin^-1 x

Cos^-1 x

-Cos^-1 x

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Question # 3

Two matrices A and B are conformable for multiplication (AB) if and only if

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Addition

Multiplication

Division

Subtraction

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Question # 4

If f(x) = x³- 2x² +4x-1, then f(-2) =?

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-25

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Question # 5

If a rectangle has an area 81x² and length of 27x. then what is its width?

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3x²

9x²

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Question # 6

The multiplicative inverse of -1 in the set {1-,1} is

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Question # 7

If 1 + Cos x = 0 then x =

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π +2n π

π + nπ

π - nπ

π/2

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Question # 8

If you looking a high point from the ground then the angle formed is

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Angle of elevation

Angle of depression

Right angle

Horizon

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Question # 9

A point of a solution region where two of its boundary lines intersect is called

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Boundary

Inequality

Half plane

Vertex

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Question # 10

Corola available in 5 models 8 colours and 3 sizes how many Corola must a local dealer have no hand in order to have one of each kind avialable?

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120

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Question # 11

If any two rows (or any two columns) of a square matrix are inter changed, the determinant of the resultant matrix is

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True

False

Fallacious

Some times true

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