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Sequences and S...

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  • Question 1
    4 / -1

    If mth terms of the series 63 + 65 + 67 + 69 + .... and 3 + 10 + 17 + 24 + ... be equal , then m =

  • Question 2
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  • Question 3
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    If 2x ,x + 8, 3x + 1 are in A.P. then the value of x will be

  • Question 4
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    If the sum of n terms of an A.P is nA + n2B, where A,B are constant, then its common difference will be

  • Question 5
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    If a,b,c be in arithmetic progression, then the value of (a + 2b – c) (2b + c – a)(a + 2b + c) is

  • Question 6
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  • Question 7
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  • Question 8
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    If nth terms of two A.P\'s are 3n + 8 and 7n + 15, then the ratio of their 12th terms will be

  • Question 9
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    If a1 = a2 = 2, an = an – 1 – 1(n > 2), then a5 is

  • Question 10
    4 / -1

    If twice the 11th term of an A.P is equal to 7 times of its 21st term, then its 25th term is equal to

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