Question # 1

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Range of sec x is ______

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[-1, 1]

R

Negative real numbers

R = {x | -1 < x < 1}

p, q, r and s are integers. If the A.M. of the roots of x2- px + q2= 0 and G.M. of the roots of x2- rx + s2= 0 are equal, then

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q is an odd integer

r is an even integer

p is an even integer

s is an odd integer

The identity element with respect to subtraction is

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0

1

-1

Does not exist

The multiplicative inverse of 1 - 2i is

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If cos (2 sin-1 x) = 1/9 , then what is the value of x?

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1/3

-2/3

2/3

2/3 , -2/3

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For any set X, X∪X is

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X

X'

Φ

Universal Set

If|a| =|b|=|a + b|=1, then|a+ b| = 5, then|a-b| =

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4

6

5

3

Two circle x² + y²+2x - 8 = 0 and x² + y² -6 + 6x -46 =0:

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touch internally

do not intersect

touch externally

None of these

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