Home
Class 11
MATHS
How many terms of the A.P. – 6, , - (11)...

How many terms of the A.P. – 6, `, - (11)/2 , -5` ......... are needed to give the sum –25?

Text Solution

Verified by Experts

The correct Answer is:
5 or 20
Promotional Banner

Topper's Solved these Questions

  • SEQUENCE AND SERIES

    KUMAR PRAKASHAN|Exercise Exercise: 9.3|34 Videos

  • SEQUENCE AND SERIES

    KUMAR PRAKASHAN|Exercise Exercise: 9.4|10 Videos

  • SEQUENCE AND SERIES

    KUMAR PRAKASHAN|Exercise Exercise: 9.1|14 Videos

  • RELATIONS AND FUNCTIONS

    KUMAR PRAKASHAN|Exercise Solutions of NCERT Exemplar Problems (Question of Module)|16 Videos

  • SETS

    KUMAR PRAKASHAN|Exercise QUESTION OF MODULE|28 Videos

Similar Questions

Explore conceptually related problems

How many terms of the G.P. 3,(3)/2,3/4 ..........are needed to give the sum (3069)/512 ?

How many terms of the A.P. 18, 16, 14, 12,…. are needed to give the sum 78?

How many terms of the AP , 9 , 17 , 25 .......must be taken to give a sum of 636 ?

How many terms of the A.P. 54, 51, 48,……are needed to give the sum 513?

How many terms of the AP : 24 , 21, 18 ....... Must be taken so that sum is 78 ?

How many terms of G.P. 3, 3^2, 3^3, … are needed to give the sum 120?

How many terms of the AP 27, 24, 21, ... should be taken so that their sum is zero ?

Find twelveth term of A.P. 4, 8, 12…….

Find the sum of the first 22 term of the AP : 8, 3, -2 ......

The sum of the n terms of two A.P. are in the ratio (2n-1): (4n+ 3) . Find the ratio of their 25^(th) terms.

KUMAR PRAKASHAN-SEQUENCE 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 t...

    Text Solution

    |

  5. If the pth term of an AP is 1/q and the qth term is 1/p , show that th...

    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 sum 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, respective...

    Text Solution

    |

  12. The ratio of the sums 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 ...

    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 instalment of Rs 100. If he incr...

    Text Solution

    |

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

    Text Solution

    |