Home
Class 11
MATHS
The sum of n terms of two arithmetic pro...

The sum of `n` terms of two arithmetic progressions are in the ratio `(3n+8):(7n+15)dot` Find the ratio of their 12th terms.

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • BINOMIAL THEOREM

    RD SHARMA ENGLISH|Exercise All Questions|228 Videos

Similar Questions

Explore conceptually related problems

The sums of n terms of two arithmetic progresssions are in the ratio (7n+1):(4n+17). Find the ratio of their nth terms and also common differences.

The sums of n terms of two arithmetic progressions are in the ratio 5n + 4 : 9n + 6 . Find the ratio of their 18^(t h) terms.

The sum of n terms of two arithmetic progressions are in the ratio 5n+4:9n+6. Find the ratio of their 18th terms.

The sum of n terms of two arithmetic progressions are in the ratio 5n+4:9n+6. Find the ratio of their 18th terms.

The sum of n terms of two arithmetic progressions are in the ratio 5n+4:9n+6. Find the ratio of their 18th terms.

The sum of n terms of two arithmetic progressions are in the ratio 5n+4: 9n+6. Find the ratio of their 18th terms.

The sum of n terms of two arithmetic progressions are in the ratio 2n+3:6n+5, then the ratio of their 13th terms, is

If the sums of n terms of two arithmetic progressions are in the ratio \ 2n+5:3n+4, then write the ratio of their m t h term.

The sum of n terms of two arithmetic series are in the ratio of (7n + 1): (4n + 27) . Find the ratio of their n^(th) term.

STATEMENT-1 : The sum of n terms of two arithmetic progressions are in A.P. in the ratio (7n + 1) : (4n + 17) then the ratio n^(th) terms is 7 :4 and STATEMENT-2 : If S_(n) = ax^(2) + bx = c , "then" T_(n_ = S_(n) - S_(n-1) .

RD SHARMA ENGLISH-ARITHMETIC PROGRESSIONS-All Questions
  1. Prove that a sequence in an A.P., if the sum of its n terms is of the...

    Text Solution

    |

  2. If the first term of an A.P. is 2 and the sum of first five terms is ...

    Text Solution

    |

  3. The sum of n terms of two arithmetic progressions are in the ratio (3n...

    Text Solution

    |

  4. Let Sk be the sum of first k terms of an A.P. What must this progressi...

    Text Solution

    |

  5. Find the sum of the following arithmetic progression: 50,46,42,… upto ...

    Text Solution

    |

  6. Find the sum of the following series : (i) 1,3,5,7...upto 12 terms.

    Text Solution

    |

  7. Find the sum of the following arithmetic progression: 3,9/2,6,15/2,…...

    Text Solution

    |

  8. Find the sum of the following arithmetic progression: 41,36,31,…….to 1...

    Text Solution

    |

  9. Find the sum of the following arithmetic progression: a+b ,\ a-b ,\...

    Text Solution

    |

  10. Find the sum of the following arithmetic progression: (x-y)/(x+y),(3x-...

    Text Solution

    |

  11. Find the sum of the following series: 2+5+8+. . . .+182

    Text Solution

    |

  12. Find the sum of the following series: 101+99+97+....+47

    Text Solution

    |

  13. Find the sum of the following series: (a-b)^2+(a^2+b^2)+(a+b)^2+...+[(...

    Text Solution

    |

  14. Find the sum of first n natural numbers.

    Text Solution

    |

  15. Find the sum of all natural numbers between 1 and 100, which are divis...

    Text Solution

    |

  16. Find the sum of the first n odd numbers

    Text Solution

    |

  17. Find the sum of all odd numbers between 100 and 200.

    Text Solution

    |

  18. Show that the sum of all odd integers between 1 and 1000 which are div...

    Text Solution

    |

  19. Find the sum of all integers between 84 and 719, which are multiples o...

    Text Solution

    |

  20. Find the sum of all integers between 50 and 500 which are divisible by...

    Text Solution

    |