Question # 1

Conjugate of a + i b is:

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-a + ib

a + ib

-a - ib

a - ib

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scalarmatrix

diagonalmatrix

lower triangularmatrix

uppertriangularmatrix

n! stands for:

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product of first natural numbers

sum of n natural numbers

product of n integers

none of these

A set is defined as:

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collection of some objects

well defined collection of some objects

well defined collection of distinct objects

none of these

A statement which is true for all possible values of the variables involved in it, is called a:

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tautology

conditional

implication

absurdity

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 distance between the points P(x1, y1) and Q(x2, y2) is:

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Amplitude of sin x is:

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R

[-1,1]

0

1

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p is false and q is true

both p and q are false

p is true and q is false

both p and q are true

Product of a complex number and its conjugate is:

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a real number

irrationalnumber

a complexnumber

either real number or complexnumber

r₃ =

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(a+b) x = ax + bx is:

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A dice is rolled, the probability of getting a number which is even or greater than 4 is:

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none of these

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The next term of the sequence-1, 2, 12, 40, .........is:

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112

212

144

none

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The additive inverse of a matrix A is:

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A

A^-1

- A

A²

A set containing finite number of elements is called:

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nullset

superset

finiteset

infiniteset

A numbers exceeds its square root by 6, the number is:

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6

3

9

none of these

Which one is not a quadrant angle ?

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0°

90°

280°

270°

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