Question # 1

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sec x tan x

cos²x

sin²x

sec²x

A circle which touches one side of a triangle extermally and the other two sides produced is called

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In-circle

Circumcircle

e-circle

Point circle

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ⁿC_r

ⁿ⁺¹C_r+1

ⁿC_r+1

None

The sum of n terms of a series is denoted by

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d

n

S_n

a_n

Period of Cotangent function is

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π

-π

0

-2π

The maximum value of the quadratic function f(x) = 2x2-4x+7,is

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3

5

-3

-5

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Only one of the root of ax2 + bx + c =0, a≠ 0 is zero if

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c = 0

c = 0,b≠ 0

b = 0,c = 0

b = 0,c≠ 0

A sequence of number whose reciprocals form an arithmetic sequence is called

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Geometric sequence

Arithmetic series

Harmonic sequence

Harmonic series

The third term of a G.P. is the square of first term. If the second term is 8, then the 6th term is

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120

124

128

132

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