Home
Class 11
MATHS
Find the sum to n terms of the A.P., who...

Find the sum to n terms of the A.P., whose `k^("th")` term is 5k + 1.

Text Solution

Verified by Experts

The correct Answer is:
`n/2(5n+7)`
Promotional Banner

Topper's Solved these Questions

  • SEQUENCES AND SERIES

    NCERT TAMIL|Exercise EXERCISE 9.3|32 Videos

  • SEQUENCES AND SERIES

    NCERT TAMIL|Exercise EXERCISE 9.4|10 Videos

  • SEQUENCES AND SERIES

    NCERT TAMIL|Exercise EXERCISE 9.1|14 Videos

  • RELATIONS AND FUNCTIONS

    NCERT TAMIL|Exercise Miscellaneous Exercise on Chapter 2|12 Videos

  • SETS

    NCERT TAMIL|Exercise MISCELLANEOUS EXERCISE ON CHAPTER 1|26 Videos

Similar Questions

Explore conceptually related problems

Find the sum to n terms of the series whose n^("th") term is n (n+3).

Find the sum to n terms of the series in whose n^(th) terms is given by n(n+1)(n+4)

Find the sum to n terms of the series in whose n^(th) terms is given by (2n-1)^2

Find the sum to n terms of the series in whose n^(th) terms is given by n^2+2^n

Find the sum of the first 30 terms of an A.P. whose nth term is 3 + 2n.

Find the sum of the first 28 terms of an A.P. whose nth term is 4n-3.

Find the sum of first 10 terms of a G.P whose 3^(rd) term is 12 and the 8^(th) term is 384.

Obtain the sum of 56 terms of an A.P. whose 19^(th) and 28^(th) terms are 52 and 148 respectively.

NCERT TAMIL-SEQUENCES AND SERIES-EXERCISE 9.2
  1. Find the sum of odd integers from 1 to 2001.

    Text Solution

    |

  2. Find the sum of all natural numbers lying between 100 and 1000, which ...

    Text Solution

    |

  3. In an A.P., the first term is 2 and the sum of the first five terms is...

    Text Solution

    |

  4. How many terms of the A.P. -6, -11/2, -5,… are needed to give the sum ...

    Text Solution

    |

  5. In an A.P. if p^(th) term is 1/q and q^(th) term is 1/p , prove that t...

    Text Solution

    |

  6. If the sum of a certain number of terms of the A.P. 25, 22, 19, … is 1...

    Text Solution

    |

  7. Find the sum to n terms of the A.P., whose k^("th") term is 5k + 1.

    Text Solution

    |

  8. If the sum of n terms of an A.P. is (pn + qn^2) , where p and q are co...

    Text Solution

    |

  9. The sums of n terms of two arithmetic progressions are in the ratio 5n...

    Text Solution

    |

  10. If the sum of first p terms of an A.P. is equal to the sum of the firs...

    Text Solution

    |

  11. Sum of the first p, q and r terms of an A.P. are a, b and c, respectiv...

    Text Solution

    |

  12. The ratio of the sum of m and n terms of an A.P. is m^(2):n^(2). Show ...

    Text Solution

    |

  13. If the sum of n terms of an A.P. is 3n^(2) + 5n and its m^(th) term is...

    Text Solution

    |

  14. Insert five numbers between 8 and 26 such that the resulting sequence ...

    Text Solution

    |

  15. If (a^(n)+b^n)/ (a^(n-1) +b^(n-1)) is the A.M. between a and b, then f...

    Text Solution

    |

  16. Between 1 and 31, m numbers have been inserted in such a way that the ...

    Text Solution

    |

  17. A man starts repaying a loan as first installment of Rs. 100. If he in...

    Text Solution

    |

  18. The difference between any two consecutive interior angles of a polygo...

    Text Solution

    |