Home
Class 10
MATHS
Find the value of 'x' if 1+6+11+...+x=...

Find the value of 'x' if
`1+6+11+...+x=189`

Text Solution

Verified by Experts

The correct Answer is:
41
Promotional Banner

Topper's Solved these Questions

  • ARITHMETIC PROGRESSION

    NAGEEN PRAKASHAN ENGLISH|Exercise Exercise 5d|10 Videos

  • ARITHMETIC PROGRESSION

    NAGEEN PRAKASHAN ENGLISH|Exercise Revision Exercise Very Short Answer Questions|10 Videos

  • ARITHMETIC PROGRESSION

    NAGEEN PRAKASHAN ENGLISH|Exercise Exercise 5b|23 Videos

  • AREA RELATED TO CIRCLES

    NAGEEN PRAKASHAN ENGLISH|Exercise Revision Exercise Long Answer Question|5 Videos

  • CIRCLES

    NAGEEN PRAKASHAN ENGLISH|Exercise Long Answer Questions|2 Videos

Similar Questions

Explore conceptually related problems

Find the value of x , if x :6::5:3

Find the value of x if x^2+5x+6=0

Find the value of 11. 6\ -\ 9. 847

Solve : (2x)/(3)-(x-1)/(6)+(7x-1)/(4)=2(1)/(6) . Hence, find the value of 'a', if (1)/(a)+5x=8 .

Find value of x if x^2+5|x|+6=0

Find the value of 'k' if x+3, is a factor of the polynomial x^(4)-x^(3)-11x^(2)-x+k .

Find the value of x, if a+1=0 and x^(2)+ax-6=0 .

Find the values of x , if |[2, 4], [5, 1]|=|[2x,4], [6,x]|

Find the value of x if: (-4)/(27)xx(189)/(64)=(x)/(4)

Find the value of x [[x,x-1],[x-1,x]]=0

NAGEEN PRAKASHAN ENGLISH-ARITHMETIC PROGRESSION-Exercise 5c
  1. How many terms of the A.P. 22+26+30+… has the sum 400?

    Text Solution

    |

  2. How many terms of the A.P. 54, 51, 48, ... has the sum 513 ? Explain t...

    Text Solution

    |

  3. Find the value of 'x' if 1+6+11+...+x=189

    Text Solution

    |

  4. (a) Find the sum of first 200 even natural numbers. (b) Find the sum...

    Text Solution

    |

  5. Find the sum of n terms of an A.P. whose nth term is (2n+1).

    Text Solution

    |

  6. The sum of n terms of a series is n(n+1) . Prove that it is an A.P. al...

    Text Solution

    |

  7. The sum of n terms of a series is (3n^(2)+2n). Prove that it is an A.P...

    Text Solution

    |

  8. The sum of first 5 terms and first 15 terms of an A.P. are equal. Fin...

    Text Solution

    |

  9. The sum of first 8 terms and first 24 terms of an A.P. are equal. Find...

    Text Solution

    |

  10. The sum of15 terms of an A.P. is zero and its 4th term is 12. Find its...

    Text Solution

    |

  11. The sum of first 8 terms of an A.P. is 64 and that of first 15 terms i...

    Text Solution

    |

  12. If the m^(t h) term of an A.P. is 1/n and the n^(t h) terms is 1/m , s...

    Text Solution

    |

  13. If a(1), a(2), a(3) , … are in A.P. , such that a(1) + a(5) +a(10) ...

    Text Solution

    |

  14. The first term, last term and common difference of an A.P. are respect...

    Text Solution

    |

  15. If S(n) denotes the sum of first n terms of an AP, then prove that S(1...

    Text Solution

    |

  16. Yasmeen saves Rs. 32 during the first month, Rs. 36 in the second mont...

    Text Solution

    |

  17. The sum of the first five terms of an AP and the sum of the first seve...

    Text Solution

    |

  18. 200 logs are stacked in the following manner: 20 logs in the bottom ...

    Text Solution

    |

  19. The ratio of the sum of n terms of two A.P. s is (7n+1):(4n+27) . Fin...

    Text Solution

    |

  20. If the sum of first 7 terms of an AP is 49 and that of 17 terms is ...

    Text Solution

    |