Home
Class 10
MATHS
In an A.P.,the sum of first n terms is ...

In an A.P.,the sum of first n terms is `3n^2/2+5n/2`.Find its 25th term.Also determine its first term and C.D.

Promotional Banner

Topper's Solved these Questions

  • AREAS RELATED TO CIRCLES

    KALYANI PUBLICATION|Exercise EXERCISE|60 Videos

  • ARITHMETIC PROGRESSION

    KALYANI PUBLICATION|Exercise EXERCISE|22 Videos

Similar Questions

Explore conceptually related problems

In an A.P.,the sum of first n terms is 5n^2/2+3n/2 .Find its 20th term.

In an A.P. the sum of the first n terms is (3n^2)/2-(17n)/2 . Find its 22nd term also determine its first term and c.d.

In a G.P., the (p + q)th term is m and (p-q)th term is n. Find its pth term.

The seventh term of an A.P. is 20 and the sum of first twenty terms is 610. Find the tenth term and the sum of first fifteen terms.

The sum of fIrst n terms of an A.P series is 26n-2n^2 . Find the fifth term.

Find the rth term of an A.P., the sum of whose first n terms is 2n+3n^2 .

The n th term of a progression is 3n-5 .Find its 15th term.

In a G.P the sum of first n terms is S,the product is P and the sum of the reciprocals of the terms is R.Show that P^2=(S/R)^n .

the 6th term of an A.P. is -10 and its 10th term -26 determine the 15 term of the A.P.

The sum of first nine terms of an A.P. is 171 and that of 24 terms is 996. Find the sum of first 16 terms.

KALYANI PUBLICATION-ARITHMATIC PROGRESSION-EXERCISE
  1. Find the sum of all the natural number less than 100 which divisible b...

    Text Solution

    |

  2. Find the sum of all three digit natural number which is divisible by 1...

    Text Solution

    |

  3. In an A.P.,the sum of first n terms is 3n^2/2+5n/2.Find its 25th term...

    Text Solution

    |

  4. In an A.P.,the sum of first n terms is 5n^2/2+3n/2.Find its 20th term...

    Text Solution

    |

  5. Find the sum of all three digit numbers which leave the remainder 3 wh...

    Text Solution

    |

  6. Find the sum of all two digit natural numbers which when divided by 3 ...

    Text Solution

    |

  7. Find the sum of all two digit numbers greater than 50 which when divid...

    Text Solution

    |

  8. If the sum of first n,2n,3n terms of an A.P. be S1,S2 and S3 respectiv...

    Text Solution

    |

  9. If the sum of first n,2n,3n terms of an A.P. be S1,S2 and S3 respectiv...

    Text Solution

    |

  10. A sum of ₹700 is to be used to given seven cash prizes to students of ...

    Text Solution

    |

  11. A contract on construction job specifies a penalty for delay of comple...

    Text Solution

    |

  12. 40 coins are placed in a straight line on a ground.The distance betwee...

    Text Solution

    |

  13. For the A.P.3/2, 1/2, -1/2,-3/2write the first term and common differe...

    Text Solution

    |

  14. Find K if 10,K,-2 are in A.P.

    Text Solution

    |

  15. Are 4,4,4…in A.P.

    Text Solution

    |

  16. If a be the first term and d be the common difference write the three ...

    Text Solution

    |

  17. If a be the first term and d be the common difference write the four c...

    Text Solution

    |

  18. Fill up the gap 2,5,8,….,14,17,….are in A.P.

    Text Solution

    |

  19. Fill the gap The nth term of an A.P.whose first term is a and common ...

    Text Solution

    |

  20. Fill the gap The sum of n terms of an A.P. whose first term is a and ...

    Text Solution

    |