Question # 1

The series 2 + 2 + 2 ..... is:

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divergent

convergent

oscillatory

none of these

Sum of all three cube roots of unity is:

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1

-1

0

3

No. of arrangements of the letters of the word plane taking all letters at a time:

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5

1

none

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sin^-1 (-x) =

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-sin^-1 x

sin^-1x

π + cos^-1x

-cos^-1x

B - A is a subset of:

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A

B

Cot1°, Cot2°, Cot3°, .......... Cot89° =

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-1

1

∞

none

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all of these

The set of negative integers is closed with respect to:

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addition

multiplication

both (a) and (b)

subtraction

The roots of the equation 25x² - 30x + 9 = 0 are;

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rational

irrational

equal

complex

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 function whose domain is the set of natural numbers is called the:

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series

sequence

means

convergent

The domain of principal sine function is:

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No. of necklaces can be made from 7 beads of different colors ?

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360

120

60

70

sin (α - ß) =

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A groupoid (S) is called __________ if it is associative in S:

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group

abelian-group

semi-group

associative-group

Every real number is also a/an:

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integer

rational number

irrationalnumber

complexnumber

Inverse of an element in a group is:

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infinite

finite

unique

not possible

If set A = {1, 2, 3} and B = {1, 2, 3} then sets A and B are:

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not equal

equal

disjoint

overlapping

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0

-1

>1

none

The ordered pairs (2, 5) and (5, 2) are:

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not equal

equal

disjoint

empty

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