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NAT I General Science Mathematics MCQs With Answers

Question # 1

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

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Question # 2

Sin^-1 √3/2 =?

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2π/3

π/2

π/3

v/5

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Question # 3

The statement that a group can have more than one identity elements is

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True

False

Fallacious

Some times true

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Question # 4

Two dice are rolled The number of possible out come in which at least one die shows 2 is?

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Question # 5

The set of complex numbers forms a group under the binary operation of

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±1

{0,1}

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Question # 6

The Domain of f(x) = log x is

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[0,∞]

(0, ∞)

[0,∞[

[∞ ,∞]

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Question # 7

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 # 8

There are 30 Red, 20 Green and some Blue bells in a bag if the probability of finding a Red ball is 1/3,how many are red balls in the bag

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120

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Question # 9

The set (Q, .)

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Infinite set

Singleton set

Two points set

None

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Question # 10

Sec^-1 x=

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Cos^-1 1/x

Cosec^-1 1/x

Cos-1 (-x)

Tan^-1 x

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Question # 11

In the figure angle A is =

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