Question # 1

The period of cosec 10x is _______

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The roots of ax2+bx+c=0 are

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Rational ⇔ b2 -4 ac ≥ 0

Irrational ⇔ b2-4 ac > 0

Real ⇔ b2-4 ac ≠ 0

Rational⇔ b2-4 ac = 0

Every real number is

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A complex number

A rational number

A natural number

A prime number

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2 and 9

3 and 2

2/3 and 9

3/2 and 6

The general term of the A.P. is

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a₁+ (n - 1) d

n + (a₁- 1) d

d + (n - 1) a₁

None of these

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Diagonal matrix

Scalar matrix

Triangular matrix

Identity matrix

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A onto B

both a & c

A into B

none of these

ᵨ is a

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variable

Positive constant

Positive variable

Directrix

QUQ, =

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N

R

W

Z

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-10

10/7

-10/7

-7/10

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