Question # 1

In any triangle ABC, law of cosines is:

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No. of signals made by 5 flags of different colors using 3 flags at a time is:

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60

15

10

None

The multiplicative invers of a non-zero real number a is:

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0

-a

a

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4

6

8

10

In triangle ABC, If Γ = 90° then:

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b = c + a

Number of terms in the expansion of (x+y)⁶ is:

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7

6

2

8

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

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112

212

144

none

A set containing finite number of elements is called:

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nullset

superset

finiteset

infiniteset

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equal sets

null sets

overlapping sets

subsets

tan (-135°) =

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0

1

√2

If an angle α is allied to an angle ß, then α ± ß = __________:

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90°

multiple of 90°

180°

multiple of 180°

Every real number is also a/an:

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integer

rational number

irrationalnumber

complexnumber

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A is superset of B

B is superset of A

A is subset of B

A is equivalent to B

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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

Truth table containing all the values true is called:

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absurdity

conjunction

tautology

none

The period of sec 3x is :

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

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-1

1

∞

none

Domain of the function y = tan^-1 x is:

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

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x = 5

x = 2

x = -5

x = 3

The in-radius r of a triangle is given by:

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