Question # 1

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tan x

cot x

The range of y = cos^-1 x function is:

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real numbers

complexnumbers

primenumbers

oddnumbers

If the sum of the roots of the equation kx² - 2x + 2k = 0 is equal to their product, then the value of k is:

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1

2

3

4

For what value of k, the sum of the roots of the equation x² + kx + 4 = 0 is equal to the product of its roots:

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±1

4

±4

-4

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

Amplitude of sin x is:

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R

[-1,1]

0

1

In any triangle ABC, law of tangents is:

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all of these

Probability of a certain event is:

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0

1

>1

∞

If A is a matrix of order m × n and B is a matrix of order n × p then the order of AB is:

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p×m

p×n

n×p

m×p

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5

14

20

6

Synthetic division is a process of:

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division

subtraction

addition

multiplication

If ⁿP₂ = 30 then n = :

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5

6

2

3

If α, ß, Γ are the angles of a oblique triangle, then:

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α = 90°

ß = 90°

Γ = 90°

none of these

Number of digits multiple of 5 made from the digits 2, 3, 5, 7, 9 is:

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5

24

20

none

r r₁ r₂ r₃ =

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abc

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The circum-radius R of a triangle is given by:

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If the sum of the roots of ax² - (a + 1) x + (2a + 1) = 0 is 2, then the product of the roots is:

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1

2

3

4

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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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