Home
Class 10
MATHS
The sum of the first 7 terms of an AP is...

The sum of the first `7` terms of an `AP` is `63` and the sum of its next `7 ` terms is `161.` Find the `28th` term of this `AP.`

Promotional Banner

Topper's Solved these Questions

  • AREAS RELATED TO CIRCLES

    RD SHARMA|Exercise All Questions|251 Videos

  • CIRCLES

    RD SHARMA|Exercise All Questions|131 Videos

Similar Questions

Explore conceptually related problems

The sum of the first 7 terms of an AP is 63 and the sum of its next 7 terms is 161. Find the 28 th term of this AP.

The sum of the first sixteen terms of an AP is 112 and the sum of its next fourteen terms is 518 .Find the AP

The sum of the 4th and 8th terms of an AP is 24 and the sum of its 6th and 10th terms is 44. Find the first terms of the AP.

The sum of the 3rd and 7th terms of an A.P. is 54 and the sum of the 5th and 11th terms is 84. Find the A.P.

The sum of the 4 th and 8 th terms of an AP is 24 and the sum of the 6th and 10 th terms is 44. Find the first three terms of the AP.

The sum of the 4th and the 8 the terms of an AP is 24 and the sum of its 6th and 10th terms is 44. Find its first term.

The sum of the first fifteen terms of an A.P. is 105 and the sum of the next fifteen terms is 780. Find the common difference of A.P.:

If the sum of first 7 terms of an A.P is 49 and that of its first 17 terms is 289, find the sum of first n terms of the A.P

RD SHARMA-ARITHMETIC PROGRESSIONS-All Questions
  1. The sum of first seven terms of an A.P is 182. If its 4(th) term and 7...

    Text Solution

    |

  2. The sum of the first n terms of an A.P. is 3n^2+6n . Find the n ...

    Text Solution

    |

  3. The sum of the first 7 terms of an AP is 63 and the sum of its next 7 ...

    Text Solution

    |

  4. If Sn denotes the sum of the first n terms of an A.P., prove tha...

    Text Solution

    |

  5. The sum of first n terms of an A.P. is 5n-n^2 . Find the n t h t...

    Text Solution

    |

  6. The sum of the first n terms of an A.P. is 4n^2+2n . Find the n ...

    Text Solution

    |

  7. If the 10 t h term of an A.P. is 21 and the sum of its first ten te...

    Text Solution

    |

  8. The first and the last terms of an AP are 7 and 49 respectively. If...

    Text Solution

    |

  9. If Sn denotes the sum of first n terms of an A.P., prove that S(...

    Text Solution

    |

  10. If the sum of the first n terms of an A.P. is 1/2(3n^2+7n), then find ...

    Text Solution

    |

  11. The sum of first 9 terms of an A.P. is 162. The ratio of its 6th t...

    Text Solution

    |

  12. Define an arithmetic progression.

    Text Solution

    |

  13. Write the common difference of an A.P. whose n t h term is an=3n+7 ...

    Text Solution

    |

  14. Which term of the sequence 114 ,\ 109 ,\ 104 ,\ is the first ne...

    Text Solution

    |

  15. Write the value of a(30)-a(10) for the A.P. 4,\ 9,\ 14 ,\ 19 ,\ ...

    Text Solution

    |

  16. Write 5t h term from the end of the A.P. 3,\ 5,\ 7,\ 9,\ ddot,\ 201...

    Text Solution

    |

  17. Write the value of x for which 2x ,\ x+10 and 3x+2 are in A.P.

    Text Solution

    |

  18. Write the n t h term of an A.P. the sum of whose n terms is Sn .

    Text Solution

    |

  19. Write the sum of first n odd natural numbers.

    Text Solution

    |

  20. Write the sum of first n even natural numbers.

    Text Solution

    |