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Sequences and S...

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  • Question 1
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    If “a ”is the first term and  ℓ  is the last term (nth term), then the sum of all the term of this sequence is given by:

  • Question 2
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    Find the sum of first hundred even natural numbers which are divisible by 5.

  • Question 3
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    If the 10 times of the 10th  term of an AP is equal to 15 times to the 15th term, then the 25th term is:

  • Question 4
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    Find the missing number. 1, 4, 9, 16, 25, 36, 49, (....)

  • Question 5
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    The first negative term of the  A.P.62,57,52 …. is the

  • Question 6
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    How many terms of the series 24,20,16,…are required so that their sum is 72?

  • Question 7
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    Roots of quadratic equation  x2  –3x  = 0 , will be

  • Question 8
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    The number of terms in the sequence -17, -10, -3,…., 144 is:

  • Question 9
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    Three terms in A.P. are such that their sum is 45. What is the middle term?

  • Question 10
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    The terms of an A.P. are doubled, then the resulting sequence is

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