Home
Class 10
MATHS
if (3+5+7...n terms)/(5+8+11+...10 ...

if `(3+5+7...n terms)/(5+8+11+...10 terms)=7` find n.

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

If the ratio of the sum of m terms of an A.P. to the sum of n terms is m2 : n2. Show that the ratio of the 5th to 11th term is 3 : 7.

If the ratio of sum of m terms of an A.P. to the sum of n terms is (2m + 1) : (3n +1), find the ratio of 7th to 10th term

If 3rd term of a G.P. is 324 and 7th term is 64, then find the 10th term.

If the sum to 2n terms of the A.P. 2, 5, 8, 11, .... is equal to the sum to n terms of 57, 59, 61, 63, ....., then n=

If the nth term of the A.P. 9, 7, 5, .... is same as the nth term of A.P. 15, 12, 9, .... find n.

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

If the sum of n terms of an A.P. is 3n^2 + 5n and its m^(th) term is 164, find the value of m.

Find the sum of the following series : 5.6+6.7+7.8 + .... to 25 terms .

Find the sum of the following series : 3.8+6.11+9.14+ .... to n terms .

MBD-ARITHMETIC PROGRESSION-EXERCISE
  1. Determine an A.P. whose sum of n terms is n (n + 2). Find also the 21s...

    Text Solution

    |

  2. In a sequence, the sum of first n terms is Sn = 2n^2 + 3n + 1, for all...

    Text Solution

    |

  3. If the sum of n terms of a series is a + bn + cn^2. Find the nth term ...

    Text Solution

    |

  4. If Sn denotes the sum of n terms of an A.P. whose first term is a, and...

    Text Solution

    |

  5. For an A.P., show that Tp+T(p+2q)=2T(p+q) .

    Text Solution

    |

  6. The first and last terms of an A.P. are a and l respectively. Show th...

    Text Solution

    |

  7. Find the arithmetic series of n terms whose first term is a and last t...

    Text Solution

    |

  8. If the sum of n terms of two arithmetic series are in the ratio. ,- (2...

    Text Solution

    |

  9. If the sum of n terms of two arithmetic series are in the ratio. ,- (6...

    Text Solution

    |

  10. if (3+5+7...n terms)/(5+8+11+...10 terms)=7 find n.

    Text Solution

    |

  11. If the ratio of sum of m terms of an A.P. to the sum of n terms is (2m...

    Text Solution

    |

  12. If the ratio of the sum of m terms of an A.P. to the sum of n terms is...

    Text Solution

    |

  13. A ball rolling up an incline covers 36 metres during first second, 32 ...

    Text Solution

    |

  14. A man gets employment of $ 250 per month with annual increment of $ 20...

    Text Solution

    |

  15. If you save 1 paise today, 2 paise next day and 3 paise succeeding day...

    Text Solution

    |

  16. A student purchased a pen for $ 100. At the end of 8 months, it was va...

    Text Solution

    |

  17. A manufacturer instals a machine at a cost of $ 3,000. At the end of 9...

    Text Solution

    |

  18. On 1st January every year, a person buys National saving certificates ...

    Text Solution

    |

  19. On 1st January every year, a person buys National saving certificates ...

    Text Solution

    |

  20. Two cars start together in the same direction at the same place.The fi...

    Text Solution

    |