Question # 1

n! stands for:

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product of first natural numbers

sum of n natural numbers

product of n integers

none of these

The number of ways in which fiver persons can sit at a round table is:

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4!

5!

none of these

r₁=

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The number of subsets of a set having three elements is:

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2

3

4

8

The order of a matrix is shown by:

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number of columns + number of rows

number of rows × number of columns

number of columns - number of rows

If a_n-3 = 2n - 5 then a_n =

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2n-1

2n+1

2n+3

none

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none of these

tan (α - ß ) =

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A.M between x - 3 & x + 5 is __________:

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x + 1

x - 1

2x + 2

none

The additive inverse of a real number is a:

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0

-a

a

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In a triangle ABC b = √3, c = 1, α = 30° then a = :

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2

1

3

-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

If α, ß are the roots of x² + kx + 12=0 such that α-ß = 1 then K = :

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0

±5

±7

±15

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30°

45°

60°

75°

The objects in a set are called:

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elements

sub-sets

whole numbers

overlapping sets

What is the common difference of the sequence 11, 5, -1, ......... ?

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6

-6

none of the foregoing numbers

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diagonal matrix

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0

4

1

3

Which trigonometric equation has secondary solution ?

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sin Θ = 1

cos Θ = 1

sec Θ = 0

tan Θ = 1

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