Home
Class 10
MATHS
Determine an A.P. whose nth term is an=3...

Determine an A.P. whose nth term is `a_n=3n^2+5n` .

Promotional Banner

Topper's Solved these Questions

  • ARITHMETIC PROGRESSION

    MBD|Exercise EXERCISE|130 Videos

  • Areas of Plane Figures.

    MBD|Exercise Exercise|51 Videos

  • Board Question Papers

    MBD|Exercise Exercise|37 Videos

Similar Questions

Explore conceptually related problems

Determine an A.P. whose sum of n terms is n (n + 2). Find also the 21st term.

Find the sum of first n terms of an A.P. whose nth term is 3n+1.

By the Principle of Mathematical Induction, prove the following for all n in N : The nth term of an A.P. whose first term is 'a’ and common difference ‘d' is a + (n-1) d.

The sum of n terms of an A.P. whose first term is 5 and common difference is 36 is equal to the sum of 2n terms of another A.P. whose first term is 36 and common difference is 5. Find n.

Find the second term and nth term of an A.P. whose 6th term is 12 and 8th term is 22.

Find the sum to n terms of the A.P. whose kth term is 5k + 1.

Find the sum of the first a terms of the series whose nth term is: 3n^2+5 .

If S_n denotes the sum of n terms of an A.P. whose first term is a, and the common difference is d Find: = Sn - 2Sn + S(n +2) .

Find the 4^(th) term in the following sequence whose n^(th) term is a_n = n^2 + 3

Find the first five terms of the sequence whose n^(th) term is a_n = n^2 - 1

MBD-ARITHMETIC PROGRESSION-EXERCISE
  1. The sum of n terms of an A.P. is 136, the common difference is 4 and t...

    Text Solution

    |

  2. Find the sum of 40 terms of an A.P. whose third term is 1 and 6th term...

    Text Solution

    |

  3. Determine an A.P. whose nth term is an=3n^2+5n .

    Text Solution

    |

  4. Find last term of an A.P. whose sum is 148 and A.P. is 1,6, 11, 16, .....

    Text Solution

    |

  5. Find the sum of all the four digit numbers which are divisible by 29.

    Text Solution

    |

  6. How many three digit numbers leave remainder 2 when divided by 9. Also...

    Text Solution

    |

  7. The first term of an A.P. is 5 and 100th term is - 292. Find the 50th ...

    Text Solution

    |

  8. The sum of n terms of an A.P. whose first term is 5 and common differe...

    Text Solution

    |

  9. How many numbers between 10 and 200 are exactly divisible by 7 ? Find ...

    Text Solution

    |

  10. If the sum of n terms of two A.P.s are in the ratio 7n + 1 : 4n + 27. ...

    Text Solution

    |

  11. A man borrows $ 1,000 and agrees to repay with a total interest of $ 1...

    Text Solution

    |

  12. The rate at which monthly salary of a person increases annually is in ...

    Text Solution

    |

  13. Aman arranges to pay a debt of $90000 in 40 monthly instalments which ...

    Text Solution

    |

  14. A sum of $1000 is invested at 8% simple interest per annum. Calculate ...

    Text Solution

    |

  15. Find the sum of all even integers between 101 and 999.

    Text Solution

    |

  16. After being set up, a company manufactured 6000 scooters in the 3rd ye...

    Text Solution

    |

  17. After being set up, a company manufactured 6000 scooters in the 3rd ye...

    Text Solution

    |

  18. After being set up, a company manufactured 6000 scooters in the 3rd ye...

    Text Solution

    |

  19. Find the sum of the series : 3+6+9+12……………… to 40 terms .

    Text Solution

    |

  20. Find the sum of the series : 4+2+0-2-4………. To 20 terms.

    Text Solution

    |