Question # 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 A = [a_ij], B = [b_ij] and AB = 0 then:

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A = 0

B = 0

either A = 0 or B = 0

A & B not necessarily zero

If s denotes the length of the arc intercepted on a circle of radius r by a central angle of α radians, then:

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s = rα

s = r + α

none of these

A.M between 1 + x - x² and 1 + x + x² is:

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1 + x²

1 + x

2

none

The number of diagonals of a polygon with n sides is:

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none of these

In 2s = a + b + , then in any triangle ABC:

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all of above

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zero

non-singular

singular

none of these

What is called the difference between two consecutive terms of an arithmetic sequence ?

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common ratio

common difference

common element

none of these

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tan (270° + Θ) is equal:

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cot Θ

tan Θ

-cot Θ

-tan Θ

Multiplicative inverse of -i is:

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i

-i

1

-1

sin^-1 (-x) =

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-sin^-1 x

sin^-1x

π + cos^-1x

-cos^-1x

The other name of quadratic equation is:

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linear equation

1st degree equation

2nd degree equation

none

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

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5, 6

1

Conjugate of a- i b is:

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b + ia

-a + ib

-a - ib

a + ib

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

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group

abelian-group

semi-group

associative-group

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i² + 1 =

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-1

0

i

1

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Tan (294°) =

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tan24°

-tan24°

cot24°

-cot24°

If f(x) = arccos x, then:

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