Home
Class 10
MATHS
The common difference of an A.P., the ...

The common difference of an A.P., the sum of whose `n` terms is `S_n` , is `S_n-2S_(n-1)+S_(n-2)` (b) `S_n-2S_(n-1)-S_(n-2)` (c) `S_n-S_(n-2)` (d) `S_n-S_(n-1)`

Promotional Banner

Topper's Solved these Questions

  • AREAS RELATED TO CIRCLES

    RD SHARMA|Exercise All Questions|251 Videos

  • CIRCLES

    RD SHARMA|Exercise All Questions|131 Videos

Similar Questions

Explore conceptually related problems

The n t h term of an A.P., the sum of whose n terms is S_n , is S_n+S_(n-1) (b) S_n-S_(n-1) (c) S_n+S_(n+1) (d) S_n-S_(n+1)

S_(n+3)-3S_(n+2)+3S_(n+1)-S_(n)=0

If S_(n), be the sum of n terms of an A.P; the value of S_(n)-2S_(n-1)+S_(n-2), is

If S_(n) is the sum of the first n terms of an A.P. then : (a) S_(3n)=3(S_(2n)-S_n) (b) S_(3n)=S_n+S_(2n) (c) S_(3n)=2(S_(2n)-S_(n) (d) none of these

If S_(n) denotes the sum of first n terms of an A.P., then (S_(3n)-S_(n-1))/(S_(2n)-S_(n-1)) is equal to

If S_(n) denotes the sum of n terms of A.P.then S_(n+1)-3S_(n+2)+3S_(n+1)-S_(n)=2^(S)-nbs_(n+1)c.3S_(n)d.0

If S_(k) denotes the sum of first k terms of a G.P. Then, S_(n),S_(2n)-S_(n),S_(3n)-S_(2n) are in

If S_(n) denotes the sum of n terms of an A.P. whose common difference is d and first term is a,find S_(n)-2S_(n-1)+S_(n-2)

If S_(n), denotes the sum of n terms of an A.P. then S_(n+3)-3S_(n+2)+3S_(n+1)-S_(n)=

RD SHARMA-ARITHMETIC PROGRESSIONS-All Questions
  1. The 9t h term of an A.P. is 449 and 449th term is 9. The term which...

    Text Solution

    |

  2. The n t h term of an A.P., the sum of whose n terms is Sn , is Sn+S...

    Text Solution

    |

  3. The common difference of an A.P., the sum of whose n terms is Sn , i...

    Text Solution

    |

  4. If the sums of n terms of two arithmetic progressions are in the...

    Text Solution

    |

  5. If Sn denote the sum of n terms of an A.P. with first term a and...

    Text Solution

    |

  6. If the first term of an A.P. is a and n t h term is b , then its c...

    Text Solution

    |

  7. The sum of first n odd natural numbers is 2n-1 (b) 2n+1 (c) n^2 ...

    Text Solution

    |

  8. Two A.P.’s have the same common difference. The first term of one o...

    Text Solution

    |

  9. If 18 ,\ a ,\ b ,\ -3 are in A.P., the a+b= (a) 19 (b) 7 (c) 11 (d...

    Text Solution

    |

  10. If (5+9+13+\ ddotto\ n\ t e r m s)/(7+9+11+\ ddotto\ (n+1)t e r m s)=(...

    Text Solution

    |

  11. The sum of n terms of an A.P. is 3n^2+5n , then 164 is its (a) 2...

    Text Solution

    |

  12. If the n^(t h) term of an A.P. is 2n+1 , then the sum of first n...

    Text Solution

    |

  13. If 18 t h and 11 t h term of an A.P. are in the ratio 3\ :2 , then ...

    Text Solution

    |

  14. The sum of first 20 odd natural numbers is (a) 100       (b) 210  ...

    Text Solution

    |

  15. The common difference of the A.P. is 1/(2q),(1-2q)/(2q),(1-4q)/(2q)...

    Text Solution

    |

  16. The common difference of the A.P. 1/3,(1-3b)/3,(1-6b)/3,\ dot is 1/...

    Text Solution

    |

  17. The common difference of the A.P. 1/(2b),(1-6b)/(2b),(1-12 b)/(2b),......

    Text Solution

    |

  18. If k ,\ 2k-1 and 2k+1 are three consecutive terms of an A.P., the va...

    Text Solution

    |

  19. The next term of the AP sqrt(7), sqrt(28), sqrt(63),… is

    Text Solution

    |

  20. The first three terms of an A.P. respectively are 3y-1,\ 3y+5 and 5y...

    Text Solution

    |