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  • Question 2
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    If sin–1x + sin–1y + sin–1z = π/2 then x2 + y2 + z2 + 2xyz is equal to -

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  • Question 4
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    If a. b. c are three unit vectors such that  and b is not parallel to c. then the angle between a and c is

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  • Question 7
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    Suppose a, b, c are in AP and a2, b2, c2 are in GP. If a < b < c & a + b + c = 3/2, then the value of a is-

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  • Question 9
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    Find the middle term in the expansion of

  • Question 10
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    If ′M′ and σ2 are mean and variance of random variable X, whose distribution is given by -

    then,

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