Question # 1

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

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

The middle term in the expansion of (a+b)²⁰ is;

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10^th term

11^thterm

12^thterm

13^thterm

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i

0

Two matrices X and Y are equal if and only if:

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X and Y are of same order

Their corresponding elements are equal

Both a and b

None of these

A circle which touches one side of a triangle externally and the other two produces sides internally is known as:

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A.M between 1 + x - x² and 1 + x + x² is:

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1 + x²

1 + x

2

none

Irrational numbers are:

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terminating decimals

non-terminating decimals

non-terminating, repeating decimals

non-terminating, non repeating

In a circle of radius r, an arc of length kr will subtend in angle of __________ radians at the center:

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s

k

r

Θ

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right angled

equilateral

isosceles

obtuse angled

r₃ =

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The set of all rational numbers between 2, 3 is:

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an empty set

an infinite set

a finite set

a power set

A geometric series is convergent only if:

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| r | > 1

| r | < 1

| r | = 1

none of these

- 72° = ___________________:

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none of these

If two rows (or two columns) in a square matrix are identical (i.e. corresponding elements are equal), the value of the determinant is:

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0

1

-1

±1

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The range of y = sin^-1 x is:

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Probability of a certain event is:

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0

1

>1

∞

Division of a natural number by another natural number gives:

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always a natural number

always an integer

always a rationalnumber

always an irrational number

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linear equation

Quadraticequation

cubicequation

radicalequation

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

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950

760

1230

875

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