Question # 1

A clock strikes once when its hour hand is at one, twice when it is at two, and so on. How many times does the clock strike in ten hours ?

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55

78

66

46

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

If (x - 2, 2) = (3, 2), then:

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x = 5

x = 2

x = -5

x = 3

A die is rolled. The probability that the dots on the top are greater than 4 is:

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5, 6

1

The period of cos 2x is:

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{1, 2, 3}

{5, 6, 7}

{4}

tan (270° + Θ) is equal:

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cot Θ

tan Θ

-cot Θ

-tan Θ

If A = [aij] and B = [bij] are two matrices of same order r × s, then order of A - B is:

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r - s

r × s

r + s

none of these

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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2

-2

5

-5

Every real number is also a/an:

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integer

rational number

irrationalnumber

complexnumber

Tan (294°) =

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tan24°

-tan24°

cot24°

-cot24°

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equal sets

null sets

overlapping sets

subsets

If 2s = a + b + c, where a, b, c are the sides of a triangle ABC, then area of triangle ABC is given by:

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If the Discriminant of a quadratic equation is a perfect square, then roots are:

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real and equal

complex

rational

irrational

The additive inverse of a matrix A is:

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A

A^-1

- A

A²

If any two rows of a square matrix are interchanged, the determinant of the resulting matrix:

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is zero

is multiplicative inverse of the determinant of the original matrix

is additive inverse of the determinant the original matrix

none of these

A circle drawn inside a triangle and touching its sides is known as:

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Sum of integral multiples of there between 4 and 22 is:

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81

75

211

none

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