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Sequences and S...

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  • Question 1
    4 / -1

    If a, b, c, d, e, f are in A.P., then the value of e – c will be

  • Question 2
    4 / -1

    The four arithmetic means between 3 and 23 are

  • Question 3
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  • Question 4
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    Let α andβ are the roots of the equation pχ2 + qχ + r = 0, p ≠ 0. If p, q and r are in AP and

  • Question 5
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    In a triangle, the lengths of two larger sides are 10 cm and 9 cm. If the angles of the triangle are in AP, then the length of the third side is

  • Question 6
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    Let a1 , a2 , a3..., a100 be an arithmetic progression with a1 = 3 and

  • Question 7
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    A man saves RS 200 in each of the first three months of his service. In each of the subsequent months, his saving increases by RS 40 more than the saving of immediately previous month. His total saving from the start of service will be RS 11040 after

  • Question 8
    4 / -1

    If sum of the series

  • Question 9
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    In a geometric progression consisting of positive terms, each term equals the sum of the next two terms. Then, the common ratio of this progression equals

  • Question 10
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    If a1, a2, a3,...are in a harmonic progression with a1 = 5 and a20 = 25. The least positive integer n for which an < 0 is

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